Analyze

Problem 15401

13. Each person in a simple random sample of 2,000 received a survey, and 317 people returned their survey. How could nonresponse cause the results of the survey to be biased? (A) Those who did not respond reduced the sample size, and small samples have more bias than large samples. (B) Those who did not respond caused a violation of the assumption of independence. (C) Those who did not respond were indistinguishable from those who did not receive the survey. (D) Those who did not respond represent a stratum, changing the simple random sample into a stratified random sample. (E) Those who did respond may differ in some important way from those who did not respond.

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Problem 15402

Find the reciprocal of 2. Is the product of 2 and its reciprocal equal to 1? Yes or No?

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Problem 15403

Identify the sequence type for 5,45, -4 and find the next three terms if possible.

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Problem 15404

Which graph shows the function g(x)=x+3g(x)=-\sqrt{x+3}? Explain the effects of the negative sign and the square root.

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Problem 15405

Identify the sequence 100,20,4,100, 20, 4, \ldots as arithmetic, geometric, or neither.

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Problem 15406

Identify the sequence type: 2,4,16,2, 4, 16, \ldots - is it arithmetic, geometric, or neither?

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Problem 15407

Identify the sequence type: 10,20,30,10, 20, 30, \ldots - is it arithmetic, geometric, or neither?

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Problem 15408

Determine if the sequence 200,40,8,200, 40, 8, \ldots is arithmetic, geometric, or neither.

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Problem 15409

Find the range of the data set: x={21,16,13,33,26}x = \{21, 16, 13, 33, 26\}.

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Problem 15410

Identify the sequence: 6,12,18,6, 12, 18, \ldots as arithmetic, geometric, or neither.

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Problem 15411

Determine if the sequence defined by f(1)=10,f(n)=f(n1)1.5f(1)=10, f(n)=f(n-1)-1.5 for n2n \geq 2 is arithmetic, geometric, or neither.

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Problem 15412

What number can you multiply each term by to remove the fractions in the equation? 12x54+2x=56+x\frac{1}{2} x - \frac{5}{4} + 2x = \frac{5}{6} + x Options: 2, 6, 10, 12.

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Problem 15413

Determine if the sequence 25,5,1,25, 5, 1, \ldots is arithmetic, geometric, or neither. How to modify one number to make it arithmetic or geometric?

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Problem 15414

Match the recursive definition h(1)=1,h(n)=2h(n1)+1h(1)=1, h(n)=2 * h(n-1)+1 with the correct sequence: A. 80,40,20,10,580,40,20,10,5 B. 1,2,4,8,161,2,4,8,16 C. 1,3,7,15,311,3,7,15,31

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Problem 15415

Identify the sequence type: 25,19,13,25, 19, 13, \ldots Is it Arithmetic, Geometric, or Neither?

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Problem 15416

Identify the sequence type: 4, 9, 16, ... Is it Arithmetic, Geometric, or Neither?

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Problem 15417

Identify the sequence: 50,60,70,50, 60, 70, \ldots. Is it Arithmetic, Geometric, or Neither?

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Problem 15418

Let yy be the total cost of publishing a book and xx the number of copies printed, related by 1250+25x=y1250 + 25x = y.
1. What is the change in cost per book printed?
2. What is the initial cost before printing?

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Problem 15419

Find the best grading parameters for a score of X=65X=65:
1. μ=60\mu=60, σ=5\sigma=5
2. μ=60\mu=60, σ=10\sigma=10
3. μ=70\mu=70, σ=5\sigma=5
4. μ=70\mu=70, σ=10\sigma=10

See Solution

Problem 15420

Find slopes and lengths for points I(5,0)I(5,0), J(2,2)J(-2,2), K(4,5)K(-4,-5), L(3,7)L(3,-7) to identify the quadrilateral type.

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Problem 15421

A pond's water amount yy in liters after xx minutes is given by y=500+32xy=500+32x. Find the starting amount and change per minute.

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Problem 15422

Chang drives to Miami. Let yy be his distance from Miami (miles) and xx be driving time (hours). The equation is 60x+375=y-60x + 375 = y.
1. What was Chang's initial distance from Miami?
2. What is the distance change per hour he drives?

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Problem 15423

Find slopes and lengths for quadrilateral with points Q(1,3), R(3,-4), S(9,-7), T(7,0). Identify its type.

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Problem 15424

Find the midpoints of the murder rate classes given the frequency distribution for U.S. populations in 2011.

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Problem 15425

Given the demand p=90010qp=900-10q and supply p=20qp=20q, find: a. Price when demand is 0. b. Price when demand is 40 units. c. Supply at \$400. d. Demand at \$400. e. Surplus or shortage at \$400? f. Graph the curves. g. Equilibrium price and quantity.

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Problem 15426

Find the constant of proportionality for the runner's distance and time: d=4.55,13.65,22.75,31.85d = 4.55, 13.65, 22.75, 31.85 miles; t=0.5,1.5,2.5,3.5t = 0.5, 1.5, 2.5, 3.5 hours.

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Problem 15427

Find the secant line equation for y=f(x)=x2+xy=f(x)=x^{2}+x at x=3x=-3 and x=1x=-1, and the tangent line at x=3x=-3. Which slope formula is correct?

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Problem 15428

Which is a better central tendency measure for right-skewed salary data: mean or median? A. Median, B. Mean?

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Problem 15429

Analyze the function R(x)=8x+87x+21R(x)=\frac{8x+8}{7x+21} for domain, vertical asymptote, and horizontal asymptote.

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Problem 15430

Find the lower and upper fences for outliers using the five-number summary: 55,68,75,82,9855, 68, 75, 82, 98. Choose the correct option.

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Problem 15431

Identify resistant measures for describing distributions with extreme values: A. median & IQR B. mean & SD C. mean & IQR D. median & SD

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Problem 15432

Find the slope of the secant line for y=f(x)=x2+xy=f(x)=x^{2}+x at x=3x=-3 and x=1x=-1. Also, find the tangent line at x=3x=-3.

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Problem 15433

Find the midpoints for these classes: 0.04.90.0-4.9, 5.09.95.0-9.9, 10.014.910.0-14.9, 15.019.915.0-19.9, 20.024.920.0-24.9, 25.029.925.0-29.9, 30.034.930.0-34.9, 35.039.935.0-39.9, 40.044.940.0-44.9, 45.049.945.0-49.9, 50.054.950.0-54.9.

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Problem 15434

Find the proportion of bass fish lengths between 7.1 and 15.9 inches, given mean = 11.5 and SD = 2.2. Choices: A. 0.997 B. 0.95 C. 0.68 D. 0.815

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Problem 15435

A new trainee scored 74 on a test with mean 77 and standard deviation 2. How does this score compare to others?

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Problem 15436

Analyze the function f(x)=(x+8)(x2)2f(x)=(x+8)(x-2)^{2}: find end behavior, intercepts, zeros, turning points, and sketch the graph.

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Problem 15437

A baseball travels 302 ft at 54 mph and 386 ft at 82 mph. Find the line model and determine the distance per mph increase.

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Problem 15438

Analyze the function H(x)=2x69x2H(x)=\frac{2x-6}{9-x^{2}} for its domain, vertical, and horizontal asymptotes.

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Problem 15439

Analyze the function R(x)=x2100x481R(x)=\frac{x^{2}-100}{x^{4}-81}: Find its domain, vertical asymptotes, and horizontal asymptote.

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Problem 15440

Determine the end behavior of f(x)=5x2(x211)f(x)=-5 x^{2}(x^{2}-11) and find its real zeros and their multiplicities.

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Problem 15441

What is the probability that a General Manager works at a seafood restaurant, expressed as P(SG)P(S \mid G)?

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Problem 15442

Find the probability that a student studies daily given they passed the math test: P(SM)P(S | M).

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Problem 15443

What defines an event in probability? Choose the correct answer: all outcomes, a subset, a planned activity, or a single execution.

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Problem 15444

Paul rolls two dice. If A=A= both dice are odd and B=B= at least one die is even, how do AA and BB relate? Select two: Mutually Exclusive, Not Mutually Exclusive, Independent, Dependent.

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Problem 15445

Analyze the polynomial f(x)=(x+7)2(4x)f(x)=(x+7)^{2}(4-x). Find end behavior, intercepts, zeros, turning points, and sketch the graph.

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Problem 15446

Graph the function f(x)=x2+4x+1f(x)=-x^{2}+4x+1 and find its vertex, max/min, axis of symmetry, intercepts, domain, and range.

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Problem 15447

Analyze the polynomial f(x)=x3+x242xf(x)=x^{3}+x^{2}-42x. Answer parts (a) to (e) including intercepts and turning points.

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Problem 15448

Find the probability of a cancer patient having elective surgery given they received chemotherapy: P(EC)P(E|C).

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Problem 15449

What number can you multiply to eliminate fractions in 34m12=2+14m-\frac{3}{4} m - \frac{1}{2} = 2 + \frac{1}{4} m? 2, 3, 4, or 5?

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Problem 15450

Find f(x+b)f(x+b) for f(x)=3x2+5x+20xf(x)=3 x^{2}+5 x+20 x. Also, compute f(x)g(x)f(x) g(x) for f(x)=6x3+5xf(x)=6 x^{3}+5 x and g(x)=7x+3g(x)=7 x+3.

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Problem 15451

What is a trial in Arianna's 10 rolls of a die? Options: one roll, at least one 5, ten rolls, or sum of 40?

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Problem 15452

What number can you multiply by to eliminate fractions in the equation 634x+13=12x+56-\frac{3}{4} x+\frac{1}{3}=\frac{1}{2} x+5? Options: 2, 3, 6, 12.

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Problem 15453

Graph the supply S(q)=p=32qS(q)=p=\frac{3}{2} q and demand D(q)=p=8134qD(q)=p=81-\frac{3}{4} q. Find equilibrium quantity and price.

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Problem 15454

Jacqueline spins a spinner (0-4) 3 times. Are events A (all > 2) and B (sum = 9) independent, dependent, mutually exclusive, or complement?

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Problem 15455

Identify the graph of the function from reflecting f(x)=14(8)xf(x)=\frac{1}{4}(8)^{x} across the y-axis and x-axis.

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Problem 15456

What is the graph of f(x)=14(8)xf(x)=\frac{1}{4}(8)^{x} after reflecting it across the yy-axis and then the xx-axis?

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Problem 15457

Classify the following changes as endothermic or exothermic: burning a candle, cooking an egg, rain to snow, boiling water, and the reaction CH4+2O2CO2+2H2O+heat\mathrm{CH}_{4}+2 \mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} + \text{heat}.

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Problem 15458

At a university, 50% of students play volleyball. What is the probability a random student plays or doesn't play?

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Problem 15459

Find the standard deviation of the sample: 29, 36, 42, 45, 48, 50, 50, 51, 53, 55, 59, 59. r.v. ==

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Problem 15460

Identify the experiment, trial, and outcome for rolling a six-sided die with sides 1,2,3,4,5,61, 2, 3, 4, 5, 6.

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Problem 15461

There are 150 new employees divided into groups A, B, C, D, and E with 30 each. Find P(C)P(C) for group C.

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Problem 15462

Find the standard deviation of the sample: 29, 36, 42, 45, 48, 50, 50, 51, 53, 55, 59, 59. Round as needed. r.v.= \text{r.v.} =

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Problem 15463

Flights from Miami to NYC are delayed 27%27\% of the time. How likely is a flight delay for a traveler?

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Problem 15464

Three coins are flipped. There are 8 outcomes. Find outcomes in sample space, outcomes in event A, and P(A)=P(A) = \square.

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Problem 15465

Identify the solute and solvent in the following water solutions: NH3\mathrm{NH}_{3} and Na2CO3\mathrm{Na}_{2} \mathrm{CO}_{3}.

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Problem 15466

How many zeros does the function f(x)=x(x1)(2x+4)2f(x)=x(x-1)(2 x+4)^{2} have? (1 point) Options: 2, 4, 3.

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Problem 15467

Find the composite functions for f(x)=2x+3f(x)=2x+3 and g(x)=x2g(x)=x^{2} and state their domains: (a) fgf \circ g, (b) gfg \circ f, (c) fff \circ f, (d) ggg \circ g.

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Problem 15468

Identify the chemical symbols for Magnesium, Arsenic, Krypton, and Hydrogen: Mg, As, Kr, H.

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Problem 15469

What is the name of the compound Na2Cr2O7\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}?

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Problem 15470

Which element is the best semiconductor for a computer circuit board: Tin, Vanadium, Copper, or Silicon?

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Problem 15471

Identify the experiment, trial, and outcome for flipping a fair coin with sides HH and TT. Select all that apply.

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Problem 15472

Identify the metalloids from the following elements: B (Boron), Si (Silicon), Ge (Germanium). Options: A and C only, All of the Above.

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Problem 15473

Name the compound FePO4\mathrm{FePO}_{4}.

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Problem 15474

Find the mean, median, and mode(s) from this stem-and-leaf plot:
0 | 6 1 | 45 2 | 2338 3 | 4
Mean: Median: Mode(s):

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Problem 15475

What is the correct name for the compound NaC2H3O23H2O \mathrm{NaC}_{2} \mathrm{H}_{3} \mathrm{O}_{2} \cdot 3 \mathrm{H}_{2} \mathrm{O} ?

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Problem 15476

Name the compound Fe2(CrO4)3\mathrm{Fe}_{2}\left(\mathrm{CrO}_{4}\right)_{3}.

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Problem 15477

Identify the experiment, trial, and outcome in a flu vaccination study with patients. Select all that apply.

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Problem 15478

Find the mean, median, and mode of the data from this stem-and-leaf plot: 0 | 4, 1 | 55, 2 | 4578, 3 | 2.

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Problem 15479

Find the composite functions for f(x)=4x+7f(x)=4x+7 and g(x)=x2g(x)=x^{2}, and state their domains: (a) fgf \circ g (b) gfg \circ f (c) fff \circ f (d) ggg \circ g

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Problem 15480

For f(x)=8x+3f(x)=8x+3 and g(x)=x2g(x)=x^{2}, find the composite functions: (a) fgf \circ g, (b) gfg \circ f, (c) fff \circ f, (d) ggg \circ g and their domains.

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Problem 15481

A CEO rewards employees with vacation days (M or T). Define events: AA (two same days) and BB (winning a Monday). Place dots in AA, BB, or AA AND BB.

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Problem 15482

Rearrange the dots in the Venn diagram based on events AA (two same days) and BB (at least one Monday).

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Problem 15483

42 is 6 times more than 7.

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Problem 15484

What is the correct name for the compound N2O4N_{2}O_{4}?

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Problem 15485

What is the correct name for the compound S2 F4\mathrm{S}_{2} \mathrm{~F}_{4}?

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Problem 15486

What is the correct name for the compound P2S6P_{2}S_{6}?

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Problem 15487

What is the name of the compound XeF4\mathrm{XeF}_{4}?

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Problem 15488

Find composite functions for f(x)=xf(x)=\sqrt{x} and g(x)=8x+1g(x)=8x+1: (a) fgf \circ g, (b) gfg \circ f, (c) fff \circ f, (d) ggg \circ g.

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Problem 15489

What events does rolling a 3 belong to? Choose all that apply: EE OR LL, EANDLE^{\prime} \mathrm{AND} L, EE AND LL, EE^{\prime} OR LL^{\prime}, LL^{\prime}.

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Problem 15490

Which symbol makes this true: 547,098574,908547,098 \bigcirc 574,908?

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Problem 15491

What is the correct name for the compound PCl₃?

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Problem 15492

Which events include drawing the Blue 1 card? Choose all that apply: RR AND EE, RR AND OO, BB AND OO, RR^{\prime}.

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Problem 15493

Find the secant line equation for y=f(x)=x2+xy=f(x)=x^{2}+x between x=3x=3 and x=7x=7. What is y=y=?

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Problem 15494

Find the functions: a. (fg)(x)(f \circ g)(x); b. (gf)(x)(g \circ f)(x); c. (fg)(2)(f \circ g)(2); d. (gf)(2)(g \circ f)(2) for f(x)=6xf(x)=6-x and g(x)=2x2+x+9g(x)=2x^2+x+9.

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Problem 15495

Select the graph of f(x)=2f(x)=-2 and compare it with its parent function f(x)=0f(x)=0.

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Problem 15496

A pond's water amount WW (liters) is given by W=35T+600W=35T+600 for time TT (minutes) in [0, 90]. Find domain and range sets.

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Problem 15497

A publishing company has C=25N+700C=25N+700 for costs. Find the domain and range values for NN (0 to 300) and CC.

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Problem 15498

Calculate f+gf+g, fgf-g, fgfg, and fg\frac{f}{g} for f(x)=4x9f(x)=4x-9, g(x)=x2g(x)=x-2. Find their domains.

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Problem 15499

An airplane's fuel tank holds 300 gallons. If W=7F+4000W=7F+4000, describe the domain and range values. Choose the best sets.

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Problem 15500

Find the secant line for f(x)=5xf(x)=\frac{5}{x} between x=4x=4 and x=5x=5, and the tangent line at x=4x=4.

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