Expression

Problem 14101

$\lim_{x \rightarrow 8^{-}} \frac{3p(x) - 2x}{15 - 3x} = ?$
Given that as $x$ approaches 8 from the left, the value of $p(x)$ approaches 2, and as $x$ approaches 8 from the right, the value of $p(x)$ approaches 3.

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Problem 14102

Question 67
A client's intake was the following: - $11 / 4$ cup of coffee $(1$ cup $=4 \mathrm{oz})=$ $\square$ mL - 4 oz cranberry juice = $\square$ mL - $11 / 2$ bowls of chicken broth $(1$ bowl $=8 \mathrm{oz})=$ $\square$ mL - $41 / 2$ glasses of water ( 1 glass $=6$ oz $)=$ $\square$ mL - The client voided urine as follows: $360 \mathrm{~mL}, 120 \mathrm{~mL}, 300 \mathrm{~mL}$ , and 225 mL
Calculate the client's intake and output in mL . a. Intake: $\square$ mL b. Output: $\square$ mL

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Problem 14103

The lunch special at Maya's Restaurant is a sandwich, a drink and a dessert. There are 3 sandwiches, 4 drinks, and 1 dessert to choose from. How many lunch specials are possible?

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Problem 14104

Rewrite the expression $\frac{x}{x+4}$ to have the denominator $5x + 20$ . Choose the correct option.

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Problem 14105

Simplify the expression: $\frac{6 c}{w}+\frac{2 w}{7}$ . Choose the correct option.

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Problem 14106

Convert $4.22 \mathrm{oz}$ to kilograms. How many kg is that?

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Problem 14107

Convert the ratio of miles to hours (434 miles to 7 hours) into a rate.

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Problem 14108

Multiply and divide fractions, express answers in lowest terms or as mixed numbers. Also, compare plug diameters and calculate areas.

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Problem 14109

Simplify the expression: $\frac{3}{x^{2}}-\frac{4}{x}$ . Choose the correct answer from the options provided.

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Problem 14110

Simplify the complex fraction: $\frac{\left(\frac{x+1}{8}\right)}{\left(\frac{x+6}{x}\right)}$ . Choose A, B, C, or D.

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Problem 14111

Simplify the expression $\frac{4x^{2}+4x}{x+1}$ .

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Problem 14112

Find the perimeter of a rectangle with length $\frac{5}{x-4}$ ft and width $\frac{2}{x}$ ft.

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Problem 14113

How many times smaller is 184.36 than 9,027.83? Explain using place value.

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Problem 14114

Write $5 \div 8$ as a fraction and find an equivalent fraction.

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Problem 14115

Identify the rational expression from the options: a. $x^y$ , b. $xy$ , c. $\frac{x}{y}$ , d. $x+y$ .

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Problem 14116

Plot the equation $-2 + 2$ on a number line.

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Problem 14117

Omar's headphone plug changes from $1/8$ " to $1/4$ ".
a) Does the adapter increase or decrease the diameter? b) How many times larger is the larger plug's diameter? c) By how many inches is the larger plug's diameter greater?

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Problem 14118

Simplify the expression $\frac{x^{2}-1}{x} \div(x+1)$ and choose the correct option: a. $x+1$ , b. $\frac{(x-1)}{x}$ , c. $\frac{(x+1)}{x}$ , d. $\frac{1}{x+1}$ .

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Problem 14119

Calculate $10 \times 5$ .

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Problem 14120

Find the value of $\frac{2 x-2}{3-3 x}$ for $x \neq 1$ . Choose from: a. -1 b. $\frac{2}{3}$ c. $-\frac{2}{3}$ d. $-\frac{2}{3 x}$ .

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Problem 14121

Simplify: $\frac{x-3}{3-x}$ for $x \neq 3$ . Choose the correct answer: a. -1, b. $x^{2}+3$ , c. 1, d. -3.

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Problem 14122

Dave cleans pools at 5 pools/hour. What is the ratio of pools to hours?

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Problem 14123

Round 739.96 to: a) nearest whole number, b) one significant figure, c) one decimal place.

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Problem 14124

How many joules are in a bag of chips labeled $245 \mathrm{Cal}$ ?

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Problem 14125

Calculate $-2 \frac{9}{10} \div \frac{1}{3}$ .

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Problem 14126

Divide 2 by 315 using long division without decimals: $\frac{2}{315}$ .

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Problem 14127

Calculate $\frac{315}{21}$ .

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Problem 14128

Add the numbers 456,791 and 265,513.

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Problem 14129

Multiply $\frac{9}{10}$ by the mixed number $2 \frac{1}{3}$ .

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Problem 14130

Solve these problems: f. $12 \div \frac{7}{8}$ g. $1 \frac{2}{3}+\left(-\frac{2}{5}\right)$ h. $\frac{4}{7}-\left(-\frac{3}{8}\right)$ i. $-4.05+3.18$

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Problem 14131

Calculate $1 \frac{2}{3} + \left(-\frac{2}{5}\right)$ and $\frac{4}{7} - \left(-\frac{3}{8}\right)$ .

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Problem 14132

Find the perimeter of trapezoid $ABCD$ with vertices $A(-2,4)$ , $B(2,4)$ , $C(4,-3)$ , and $D(-2,-3)$ .

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Problem 14133

Convert $9.75 \times 10^{5} \mathrm{cal}$ to kJ.

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Problem 14134

Divide and simplify: $\frac{3}{7} \div 6 =$

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Problem 14135

Calculate the perimeter of parallelogram $ABCD$ with vertices $A(1,7)$ , $B(5,4)$ , $C(0,-5)$ , and $D(-4,-2)$ .

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Problem 14136

What is 32,408 in base ten? (A) 32,480 (B) 32,408 (C) 30,248 (D) 30,240

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Problem 14137

Divide and simplify: $\frac{12}{25} \div 4 =$

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Problem 14138

How many thorium atoms (240 pm radius) fit in a distance of $1.40 \mathrm{~mm}$ ?

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Problem 14139

Divide and simplify: $\frac{2}{9} \div \frac{2}{3} =$

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Problem 14140

Divide and simplify: $\frac{8}{15} \div \frac{4}{5} =$

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Problem 14141

Find sums or differences that equal 12,492: $8,572+3,920$ , $7,279+5,203$ , $4,100+8,392$ , $15,728-3,246$ , $19,412-6,920$ .

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Problem 14142

Factor the polynomial $x^{3}+3 x^{2}-4 x-12$ .

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Problem 14143

Find the volume in cubic centimeters $\left(\mathrm{cm}^{3}\right)$ of a single thorium atom, assuming it's a sphere.

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Problem 14144

Divide: $\frac{7}{10} \div \frac{3}{8} =$ in simplest form.

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Problem 14145

Divide and simplify: $\frac{1}{3} \div \frac{1}{9} =$

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Problem 14146

Find values of $t$ that make the expression $\frac{5 t-2}{3 t-9}$ undefined. List them as $t=$ .

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Problem 14147

Simplify the expression: $(-8 u^{4} v - 6 u^{3} v^{3} - 2 v^{3} - 7 u v^{4}) - (-4 u^{3} v^{3} - 8 v^{3} - 4 u v^{4} - 5 u^{4} v) + (3 u v^{4} - 8 u^{3} v^{3} - v^{3} + 4 u^{3} v^{4})$ .

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Problem 14148

Calculate $3^{2}$ and simplify your answer.

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Problem 14149

Factor the expression $2 x^{3}+6 x^{2}-8 x-24$ .

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Problem 14150

Calculate $(-8)^{2}$ . What is the result?

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Problem 14151

Simplify the expression: $\sqrt{\frac{7 x^{3}}{3}}$

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Problem 14152

Calculate $(-7)^{2}$ . What is the result?

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Problem 14153

Calculate $\left(\frac{3}{8}\right)^{2}$ .

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Problem 14154

Choose the correct verbal expression for $4s - 4$ , where $s$ is the side length of a square.

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Problem 14155

A scuba diver is at 82 feet deep and descends another 19 feet. What is his new depth as an integer?

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Problem 14156

Find the value of the variable var after executing: var = 100; var = var + 100; var = var + var.

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Problem 14157

Calculate the value of $4 + 8 \cdot 4$ . What is the result?

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Problem 14158

Decompose $\sin^{2}(y) - 8y^{4}\sin(y)$ into even and odd functions.

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Problem 14159

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Problem 14160

The temperature starts at $-14^{\circ} \mathrm{C}$ and drops $5^{\circ} \mathrm{C}$ , $3^{\circ} \mathrm{C}$ , and $1^{\circ} \mathrm{C}$ . What's the final temperature?

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Problem 14161

Evaluate: $-8 + 2 \cdot 5^{2} - 7 =$

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Problem 14162

Simplify: $6 \cdot 4 + 8 \cdot 6 =$

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Problem 14163

Find the percentage equivalent of $\frac{7}{4}$ . Options: (A) 1.75%, (B) 12.75%, (C) 175%, (D) 1775%.

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Problem 14164

Evaluate: $7 - 5(8 + 6) =$

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Problem 14165

Divide 1.9 by 0.76.

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Problem 14166

Find the weight of 12 silver atoms given that one silver atom weighs $1.79 \times 10^{-22}$ grams.

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Problem 14167

Evaluate: $-36-6(6-10)^{2}=$

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Problem 14168

Evaluate: $(20 \div 5)^{3}+9^{2} \div 27$

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Problem 14169

Evaluate: $-3+2\left[-1+\left(18 \div 3^{2}\right)\right]$

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Problem 14170

Calculate $4 - (-13) - 5$ .

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Problem 14171

Calculate: $300.42 - \frac{15.96}{0.213} =$

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Problem 14172

Simplify: $16 - 24 \div 4(-4)^{2} + 21 =$

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Problem 14173

Calculate the expression: $12 - 17 - (-8)$ .

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Problem 14174

Calculate: $(15 \div 5)+3(9-7)^{2}=$

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Problem 14175

Find the distance traveled if speed is 45 miles/hour for 2/3 hour. Use $d = rt$ .

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Problem 14176

Calculate $(-5)^{3} + 15 \div 3$ . What is the simplified result?

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Problem 14177

Find the complement of an angle measuring $39^{\circ} 1650^{\prime \prime}$ .

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Problem 14178

Calculate $\frac{5}{2}-\left(-\frac{2}{5}\right)$ .

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Problem 14179

Evaluate a) $(-8)^{2}$ , b) $-(-8)^{2}$ , and c) $-8^{2}$ . What are the results?

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Problem 14180

Evaluate these expressions for $x = -8$ : a) $x^{2}$ , b) $-x^{2}$ , c) $(-x)^{2}$ .

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Problem 14181

What is the probability of guessing a correct 5-digit pin code from a 7-key keypad on the first try? Simplify your answer.

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Problem 14182

How many $\mathrm{Mm}$ are in 382 $\mathrm{dm}$ ?

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Problem 14183

Evaluate a) $x^{2}$ , b) $-x^{2}$ , and c) $(-x)^{2}$ for $x = -8$ . What are the results?

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Problem 14184

Evaluate $-9z - 6$ for $z = 3$ . What is the result?

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Problem 14185

Evaluate $r^{2}-s^{2}$ for $r=-6$ and $s=-7$ . What is $r^{2}-s^{2}=?$

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Problem 14186

Calculate the number of $\mathrm{CL}$ in $1.18 \times 10^{2} \mathrm{floz}$ .

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Problem 14187

Calculate $\left(\frac{4}{7}\right)^{2}$ .

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Problem 14188

Evaluate: $-3 + 2[-2 + (45 \div 3^{2})]$

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Problem 14189

Convert $4.65 \times 10^{7}$ yards to megameters (Mm). How many Mm is that?

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Problem 14190

Rectangle $WXYX$ has length $3x + 5$ . Find the perimeter expression in terms of width $x$ .

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Problem 14191

Calculate $11^{2}$ and provide the simplified answer in the box: $\square$ .

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Problem 14192

Calculate $(-9)^{2}$ . What is the result?

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Problem 14193

Simplify: $6 - 18 \div 6(-5)^{2} + 8$

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Problem 14194

What is the probability of the shortest delivery route for two sites? Compute $2!$ and simplify.

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Problem 14195

Evaluate: $-6 + 3 \cdot 5^{2} - 9 =$

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Problem 14196

A moving company delivers to two sites. What is the probability of the shortest route using the factorial rule? Calculate $2!$ .

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Problem 14197

Simplify: $5 \cdot 5 + 4 \cdot 6 =$

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Problem 14198

Evaluate: $-33 - 6(6 - 10)^{2}$ . What is the result?

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Problem 14199

Calculate: $(4 \div 2) + 4(8-2)^{2}$ . What is the result?

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Problem 14200

Evaluate $r^{2}-s^{2}$ for $r=-3$ and $s=-4$ . What is the result?

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1 ...139 140 141 142 143 144

Expression

Problem 14101

lim⁡x→8−3p(x)−2x15−3x=?\lim_{x \rightarrow 8^{-}} \frac{3p(x) - 2x}{15 - 3x} = ?limx→8−​15−3x3p(x)−2x​=?Given that as xxx approaches 8 from the left, the value of p(x)p(x)p(x) approaches 2, and as xxx approaches 8 from the right, the value of p(x)p(x)p(x) approaches 3.

Problem 14102

Problem 14103

The lunch special at Maya's Restaurant is a sandwich, a drink and a dessert. There are 3 sandwiches, 4 drinks, and 1 dessert to choose from. How many lunch specials are possible?

Problem 14104

Rewrite the expression xx+4\frac{x}{x+4}x+4x​ to have the denominator 5x+205x + 205x+20. Choose the correct option.

Problem 14105

Simplify the expression: 6cw+2w7\frac{6 c}{w}+\frac{2 w}{7}w6c​+72w​. Choose the correct option.

Problem 14106

Convert 4.22oz4.22 \mathrm{oz}4.22oz to kilograms. How many kg is that?

Problem 14107

Convert the ratio of miles to hours (434 miles to 7 hours) into a rate.

Problem 14108

Multiply and divide fractions, express answers in lowest terms or as mixed numbers. Also, compare plug diameters and calculate areas.

Problem 14109

Simplify the expression: 3x2−4x\frac{3}{x^{2}}-\frac{4}{x}x23​−x4​. Choose the correct answer from the options provided.

Problem 14110

Simplify the complex fraction: (x+18)(x+6x)\frac{\left(\frac{x+1}{8}\right)}{\left(\frac{x+6}{x}\right)}(xx+6​)(8x+1​)​. Choose A, B, C, or D.

Problem 14111

Simplify the expression 4x2+4xx+1\frac{4x^{2}+4x}{x+1}x+14x2+4x​.

Problem 14112

Find the perimeter of a rectangle with length 5x−4\frac{5}{x-4}x−45​ ft and width 2x\frac{2}{x}x2​ ft.

Problem 14113

How many times smaller is 184.36 than 9,027.83? Explain using place value.

Problem 14114

Write 5÷85 \div 85÷8 as a fraction and find an equivalent fraction.

Problem 14115

Identify the rational expression from the options: a. xyx^yxy, b. xyxyxy, c. xy\frac{x}{y}yx​, d. x+yx+yx+y.

Problem 14116

Plot the equation −2+2-2 + 2−2+2 on a number line.

Problem 14117

Omar's headphone plug changes from 1/81/81/8" to 1/41/41/4". a) Does the adapter increase or decrease the diameter? b) How many times larger is the larger plug's diameter? c) By how many inches is the larger plug's diameter greater?

Problem 14118

Simplify the expression x2−1x÷(x+1)\frac{x^{2}-1}{x} \div(x+1)xx2−1​÷(x+1) and choose the correct option: a. x+1x+1x+1, b. (x−1)x\frac{(x-1)}{x}x(x−1)​, c. (x+1)x\frac{(x+1)}{x}x(x+1)​, d. 1x+1\frac{1}{x+1}x+11​.

Problem 14119

Calculate 10×510 \times 510×5.

Problem 14120

Find the value of 2x−23−3x\frac{2 x-2}{3-3 x}3−3x2x−2​ for x≠1x \neq 1x=1. Choose from: a. -1 b. 23\frac{2}{3}32​ c. −23-\frac{2}{3}−32​ d. −23x-\frac{2}{3 x}−3x2​.

Problem 14121

Simplify: x−33−x\frac{x-3}{3-x}3−xx−3​ for x≠3x \neq 3x=3. Choose the correct answer: a. -1, b. x2+3x^{2}+3x2+3, c. 1, d. -3.

Problem 14122

Dave cleans pools at 5 pools/hour. What is the ratio of pools to hours?

Problem 14123

Round 739.96 to: a) nearest whole number, b) one significant figure, c) one decimal place.

Problem 14124

How many joules are in a bag of chips labeled 245Cal245 \mathrm{Cal}245Cal?

Problem 14125

Calculate −2910÷13-2 \frac{9}{10} \div \frac{1}{3}−2109​÷31​.

Problem 14126

Divide 2 by 315 using long division without decimals: 2315\frac{2}{315}3152​.

Problem 14127

Calculate 31521\frac{315}{21}21315​.

Problem 14128

Add the numbers 456,791 and 265,513.

Problem 14129

Multiply 910\frac{9}{10}109​ by the mixed number 2132 \frac{1}{3}231​.

Problem 14130

Solve these problems: f. 12÷7812 \div \frac{7}{8}12÷87​ g. 123+(−25)1 \frac{2}{3}+\left(-\frac{2}{5}\right)132​+(−52​) h. 47−(−38)\frac{4}{7}-\left(-\frac{3}{8}\right)74​−(−83​) i. −4.05+3.18-4.05+3.18−4.05+3.18

Problem 14131

Calculate 123+(−25)1 \frac{2}{3} + \left(-\frac{2}{5}\right)132​+(−52​) and 47−(−38)\frac{4}{7} - \left(-\frac{3}{8}\right)74​−(−83​).

Problem 14132

Find the perimeter of trapezoid ABCDABCDABCD with vertices A(−2,4)A(-2,4)A(−2,4), B(2,4)B(2,4)B(2,4), C(4,−3)C(4,-3)C(4,−3), and D(−2,−3)D(-2,-3)D(−2,−3).

Problem 14133

Convert 9.75×105cal9.75 \times 10^{5} \mathrm{cal}9.75×105cal to kJ.

Problem 14134

Divide and simplify: 37÷6=\frac{3}{7} \div 6 =73​÷6=

Problem 14135

Calculate the perimeter of parallelogram ABCDABCDABCD with vertices A(1,7)A(1,7)A(1,7), B(5,4)B(5,4)B(5,4), C(0,−5)C(0,-5)C(0,−5), and D(−4,−2)D(-4,-2)D(−4,−2).

Problem 14136

What is 32,408 in base ten? (A) 32,480 (B) 32,408 (C) 30,248 (D) 30,240

Problem 14137

Divide and simplify: 1225÷4=\frac{12}{25} \div 4 =2512​÷4=

Problem 14138

How many thorium atoms (240 pm radius) fit in a distance of 1.40 mm1.40 \mathrm{~mm}1.40 mm?

Problem 14139

Divide and simplify: 29÷23=\frac{2}{9} \div \frac{2}{3} =92​÷32​=

Problem 14140

Divide and simplify: 815÷45=\frac{8}{15} \div \frac{4}{5} =158​÷54​=

$\lim_{x \rightarrow 8^{-}} \frac{3p(x) - 2x}{15 - 3x} = ?$
Given that as $x$ approaches 8 from the left, the value of $p(x)$ approaches 2, and as $x$ approaches 8 from the right, the value of $p(x)$ approaches 3.

Rewrite the expression $\frac{x}{x+4}$ to have the denominator $5x + 20$ . Choose the correct option.

Simplify the expression: $\frac{6 c}{w}+\frac{2 w}{7}$ . Choose the correct option.

Convert $4.22 \mathrm{oz}$ to kilograms. How many kg is that?

Simplify the expression: $\frac{3}{x^{2}}-\frac{4}{x}$ . Choose the correct answer from the options provided.

Simplify the complex fraction: $\frac{\left(\frac{x+1}{8}\right)}{\left(\frac{x+6}{x}\right)}$ . Choose A, B, C, or D.

Simplify the expression $\frac{4x^{2}+4x}{x+1}$ .

Find the perimeter of a rectangle with length $\frac{5}{x-4}$ ft and width $\frac{2}{x}$ ft.

Write $5 \div 8$ as a fraction and find an equivalent fraction.

Identify the rational expression from the options: a. $x^y$ , b. $xy$ , c. $\frac{x}{y}$ , d. $x+y$ .

Plot the equation $-2 + 2$ on a number line.

Omar's headphone plug changes from $1/8$ " to $1/4$ ".
a) Does the adapter increase or decrease the diameter? b) How many times larger is the larger plug's diameter? c) By how many inches is the larger plug's diameter greater?

Simplify the expression $\frac{x^{2}-1}{x} \div(x+1)$ and choose the correct option: a. $x+1$ , b. $\frac{(x-1)}{x}$ , c. $\frac{(x+1)}{x}$ , d. $\frac{1}{x+1}$ .

Calculate $10 \times 5$ .

Find the value of $\frac{2 x-2}{3-3 x}$ for $x \neq 1$ . Choose from: a. -1 b. $\frac{2}{3}$ c. $-\frac{2}{3}$ d. $-\frac{2}{3 x}$ .

Simplify: $\frac{x-3}{3-x}$ for $x \neq 3$ . Choose the correct answer: a. -1, b. $x^{2}+3$ , c. 1, d. -3.

How many joules are in a bag of chips labeled $245 \mathrm{Cal}$ ?

Calculate $-2 \frac{9}{10} \div \frac{1}{3}$ .

Divide 2 by 315 using long division without decimals: $\frac{2}{315}$ .

Calculate $\frac{315}{21}$ .

Multiply $\frac{9}{10}$ by the mixed number $2 \frac{1}{3}$ .

Solve these problems: f. $12 \div \frac{7}{8}$ g. $1 \frac{2}{3}+\left(-\frac{2}{5}\right)$ h. $\frac{4}{7}-\left(-\frac{3}{8}\right)$ i. $-4.05+3.18$

Calculate $1 \frac{2}{3} + \left(-\frac{2}{5}\right)$ and $\frac{4}{7} - \left(-\frac{3}{8}\right)$ .

Find the perimeter of trapezoid $ABCD$ with vertices $A(-2,4)$ , $B(2,4)$ , $C(4,-3)$ , and $D(-2,-3)$ .

Convert $9.75 \times 10^{5} \mathrm{cal}$ to kJ.

Divide and simplify: $\frac{3}{7} \div 6 =$

Calculate the perimeter of parallelogram $ABCD$ with vertices $A(1,7)$ , $B(5,4)$ , $C(0,-5)$ , and $D(-4,-2)$ .

Divide and simplify: $\frac{12}{25} \div 4 =$

How many thorium atoms (240 pm radius) fit in a distance of $1.40 \mathrm{~mm}$ ?

Divide and simplify: $\frac{2}{9} \div \frac{2}{3} =$

Divide and simplify: $\frac{8}{15} \div \frac{4}{5} =$

Find sums or differences that equal 12,492: $8,572+3,920$ , $7,279+5,203$ , $4,100+8,392$ , $15,728-3,246$ , $19,412-6,920$ .

Factor the polynomial $x^{3}+3 x^{2}-4 x-12$ .

Find the volume in cubic centimeters $\left(\mathrm{cm}^{3}\right)$ of a single thorium atom, assuming it's a sphere.

Divide: $\frac{7}{10} \div \frac{3}{8} =$ in simplest form.

Divide and simplify: $\frac{1}{3} \div \frac{1}{9} =$

Find values of $t$ that make the expression $\frac{5 t-2}{3 t-9}$ undefined. List them as $t=$ .

Calculate $3^{2}$ and simplify your answer.

Factor the expression $2 x^{3}+6 x^{2}-8 x-24$ .

Calculate $(-8)^{2}$ . What is the result?

Simplify the expression: $\sqrt{\frac{7 x^{3}}{3}}$

Calculate $(-7)^{2}$ . What is the result?

Calculate $\left(\frac{3}{8}\right)^{2}$ .

Choose the correct verbal expression for $4s - 4$ , where $s$ is the side length of a square.

Calculate the value of $4 + 8 \cdot 4$ . What is the result?

Decompose $\sin^{2}(y) - 8y^{4}\sin(y)$ into even and odd functions.

The temperature starts at $-14^{\circ} \mathrm{C}$ and drops $5^{\circ} \mathrm{C}$ , $3^{\circ} \mathrm{C}$ , and $1^{\circ} \mathrm{C}$ . What's the final temperature?

Evaluate: $-8 + 2 \cdot 5^{2} - 7 =$

Simplify: $6 \cdot 4 + 8 \cdot 6 =$

Find the percentage equivalent of $\frac{7}{4}$ . Options: (A) 1.75%, (B) 12.75%, (C) 175%, (D) 1775%.

Evaluate: $7 - 5(8 + 6) =$

Find the weight of 12 silver atoms given that one silver atom weighs $1.79 \times 10^{-22}$ grams.

Evaluate: $-36-6(6-10)^{2}=$

Evaluate: $(20 \div 5)^{3}+9^{2} \div 27$

Evaluate: $-3+2\left[-1+\left(18 \div 3^{2}\right)\right]$

Calculate $4 - (-13) - 5$ .

Calculate: $300.42 - \frac{15.96}{0.213} =$

Simplify: $16 - 24 \div 4(-4)^{2} + 21 =$

Calculate the expression: $12 - 17 - (-8)$ .

Calculate: $(15 \div 5)+3(9-7)^{2}=$