Linearity

Problem 2301

Find the equation in slope-intercept form for a line with slope -5 and y-intercept 3.

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Problem 2302

Find the intersection point (x,y)(x, y) of the two linear equations given their points:
1st: (2,15),(0,11),(2,8),(4,5)(-2, 15), (0, 11), (2, 8), (4, 5) 2nd: (2,4),(0,6.5),(2,8),(4,9.5)(-2, 4), (0, 6.5), (2, 8), (4, 9.5).

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Problem 2303

Solve the system of equations: x+y=7x+y=7 and x2y=4x-2y=4.

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Problem 2304

Complete the table for the function where the output is 4n+14n + 1. Find the output for n=5n = 5 and beyond.

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Problem 2305

Jay has 10 baseball cards and buys 1 each month. Model the total cards after nn months: C(n)=10+nC(n) = 10 + n.

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Problem 2306

Find three integers that differ by 3, where 5 times the largest equals 3 times the smallest plus 5 times the middle.

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Problem 2307

Fritz's drive takes 48 min, train 40 min. Train is 6 mph faster. Find distance dd he travels to work. Simplify dd.

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Problem 2308

Jane took 10 min upstream and 5 min downstream. If the current is 6 km6 \mathrm{~km}/hr, find her boat speed in still water.

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Problem 2309

How many quarts of pure antifreeze are needed to change 5 quarts of a 30%30\% solution to a 40%40\% solution?

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Problem 2310

Solve the equation: (15x)+8=17+2x-(1-5 x)+8=-17+2 x.

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Problem 2311

Solve the equation: 2(7a+6)=167a2(-7a + 6) = -16 - 7a.

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Problem 2312

Margaret drove to an appointment at 90mph90 \mathrm{mph} and returned at 80mph80 \mathrm{mph}, taking 18hr\frac{1}{8} \mathrm{hr} longer. Find the distance.

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Problem 2313

Simplify the expression: 9n8+3(2n11)9n - 8 + 3(2n - 11).

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Problem 2314

How many quarts of pure antifreeze are needed to change 5 quarts of a 30%30\% solution to a 40%40\% solution?

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Problem 2315

Jane took 20 min to go upstream and 10 min to return. If the current is 8 km/hr, find her boat speed in still water in km/hr.

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Problem 2316

A mother earned \$6250. She set aside 20% for a home, invested the rest at 4% and 7%, earning \$300 interest. Find the CD investment.

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Problem 2317

Evaluate the expression for c=7c=7 and y=4y=-4: c+8y-c + 8y.

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Problem 2318

Evaluate 4x+c-4x + c for c=6c = -6 and x=3x = 3.

See Solution

Problem 2319

Solve the equation: 5(6x2)+9=30x15(6 x-2)+9=30 x-1.

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Problem 2320

Solve the equation: 4(3x8)1=12x364(3 x-8)-1=12 x-36.

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Problem 2321

Solve for xx: 7(x+4)+2=4(x11)87(x+4)+2=-4(x-11)-8

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Problem 2322

Розв'яжи рівняння: x3765=654x-3765=654.

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Problem 2323

Знайди перше число, якщо друге число на 15 менше від першого і дорівнює 93: x15=93x - 15 = 93.

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Problem 2324

Determine the line equation through the point (3,1)(-3,1) with a slope of 2-2.

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Problem 2325

Solve for xx: 13x+14x2=x7\frac{1}{3} x+\frac{1}{4} x-2=x-7.

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Problem 2326

Find the equation of the line through (5,5)(-5,-5), parallel to y=25x+4y=\frac{2}{5}x+4.

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Problem 2327

Solve the equation: 14(x3)=12\frac{1}{4}(x-3)=\frac{1}{2}.

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Problem 2328

Solve for xx in the equation x8+15=17\frac{x}{8}+15=17.

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Problem 2329

Find the line equation in point-slope form through points (5,1)(-5,1) and (3,1)(3,1).

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Problem 2330

Solve the equation: x83=23\frac{x-8}{3}=\frac{2}{3}.

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Problem 2331

Find the unit rate for the whale's speed, and the vertical and horizontal changes between points (2.5,1)(2.5,1) and (5,2)(5,2).

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Problem 2332

Scott uses 43-cent and 6-cent stamps to make \$1.77. How many of each stamp did he use?

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Problem 2333

Find a number xx such that 12x+4=4×1012x + 4 = 4 \times 10.

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Problem 2334

In a field with 30 heads and 82 feet, how many pigs and chickens are there? Let pigs be pp and chickens be cc. Solve:
1. p+c=30p + c = 30
2. 4p+2c=824p + 2c = 82

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Problem 2335

Identify equivalent equations to 54z=7054-z=70 using properties of equality from the options provided.

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Problem 2336

Select all equations equivalent to 9=10s9=10 s: 6=10s26=10 s-2, 7=10s27=10 s-2, 4=10s54=10 s-5, 8=10s38=10 s-3.

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Problem 2337

Select the equivalent equations to f+g=5f+g=5 using properties of equality: f+g+4=7f+g+4=7, 11+f+g=1811+f+g=18, 8+f+g=148+f+g=14, 11+f+g=1611+f+g=16.

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Problem 2338

Choose all equivalent equations to: 7=7y7=7-y. Options are: 3=7y43=7-y-4, 7=7y27=7-y-2, 4=7y34=7-y-3, 2=7y52=7-y-5.

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Problem 2339

Lösen Sie die folgenden linearen Gleichungen über R:
1. a) 3x+5=233x + 5 = 23 b) 8x12=288x - 12 = 28 c) 10y+23=310y + 23 = 3 d) 115z=2611 - 5z = 26 e) 4z9=24z - 9 = -2 f) 12y+15=1912y + 15 = 19 g) 8012t=3880 - 12t = 38 h) 16=7z+3016 = 7z + 30
2. a) 7x+3=5x+127x + 3 = 5x + 12 b) 6z+8=11z76z + 8 = 11z - 7 c) 9y+4=3y109y + 4 = 3y - 10 d) 1007x=13x100 - 7x = 13x e) 0.9x+5=1.2x3.40.9x + 5 = 1.2x - 3.4 f) 4.2t7=113.3t4.2t - 7 = 11 - 3.3t g) 0.7y+2.8=0.55y1.70.7y + 2.8 = 0.55y - 1.7 h) 0.51.7z=0.74+2.3z0.5 - 1.7z = 0.74 + 2.3z
3. a) 2x3+2=10\frac{2x}{3} + 2 = 10 b) 3x55=7\frac{3x}{5} - 5 = 7 c) x2+x3=25\frac{x}{2} + \frac{x}{3} = 25 d) y3+y4+15=y\frac{y}{3} + \frac{y}{4} + 15 = y e) z3z5=1\frac{z}{3} - \frac{z}{5} = 1 f) u5+2=u34\frac{u}{5} + 2 = \frac{u}{3} - 4 g) 3z4=2z35\frac{3z}{4} = \frac{2z}{3} - 5 h) 5y8=2y5+3\frac{5y}{8} = \frac{2y}{5} + 3
4. a) 3(x+7)=4(2x1)3(x + 7) = 4(2x - 1) b) 4(5x3)+6=104(5x - 3) + 6 = 10 c) 8(y+10)30=5y8(y + 10) - 30 = 5y d) 9(y5)=4y109(y - 5) = 4y - 10 e) 3(6v+4)=9(2v3)3(6v + 4) = 9(2v - 3) f) 8(3+2z)3z=5z88(3 + 2z) - 3z = 5z - 8 g) 5(y0.2)=1.6(3y+0.5)5(y - 0.2) = 1.6(3y + 0.5) h) 4(9w11)12(3w4)=44(9w - 11) - 12(3w - 4) = 4
5. a) 3y+52=2y3\frac{3y + 5}{2} = \frac{2y}{3} b) x+53=3x4\frac{x + 5}{3} = \frac{3x}{4} c) 2x52=4x95\frac{2x - 5}{2} = \frac{4x - 9}{5} d) 4x+306=9x4\frac{4x + 30}{6} = \frac{9 - x}{4} e) 2z+75=93z6\frac{2z + 7}{5} = \frac{9 - 3z}{6} f) 3y+44=4y65\frac{3y + 4}{4} = \frac{4y - 6}{5} g) 4z+16=z32+23\frac{4z + 1}{6} = \frac{z - 3}{2} + \frac{2}{3} h) y+23+y115=2y+35\frac{y + 2}{3} + \frac{y - 1}{15} = \frac{2y + 3}{5}

See Solution

Problem 2340

Select all equations equivalent to f+g=5f+g=5 using properties of equality: f+g+4=7f+g+4=7, 11+f+g=1811+f+g=18, 8+f+g=148+f+g=14, 11+f+g=1611+f+g=16.

See Solution

Problem 2341

Select equations equivalent to 12=5j12=5 j using properties of equality: 19=7+5j19=7+5 j, 16=5j+416=5 j+4, 15=5j+315=5 j+3, 17=5+5j17=5+5 j.

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Problem 2342

Find the slope of the line through points (-1,-2) and (3,0): m=0(2)3(1)=[?]m=\frac{0-(-2)}{3-(-1)}=[?]. Options: A. 2/4-2/4, B. 1/21/2, C. 0, D. 2/2-2/2.

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Problem 2343

What are the inputs to the slope formula for points (-1,-2) and (3,0)?
m=02[?](1) m=\frac{0--2}{[?]-(-1)}
A. 0 B. -2 C. -1 D. 3

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Problem 2344

Find the equation in point-slope form of a line with slope m=3m=-3 through the point (8,2)(8,2).

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Problem 2345

Find the point-slope form of the line with slope m=3m=-3 through the point (5,3)(5,3). y[?]=(x)y-[?]=\square(x-\square)

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Problem 2346

Find the equation in point-slope form of a line with slope m=5m=-5 through the point (4,2)(4,-2).

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Problem 2347

Find the equation of the line in point-slope form using the point (5,1)(-5,1) with slope m=2m=2. y1=2(x[?])y-1=2(x-[?])

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Problem 2348

Find the slope of the line through points (12,3)(12,3) and (6,1)(6,1). Slope = [[]\frac{[}{[]}

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Problem 2349

Find the slope of the line through (12,3)(12,3) and (6,1)(6,1). Then use the slope-intercept formula to find bb.

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Problem 2350

Find the slope of the line through points (12,3)(12,3) and (6,1)(6,1). Then complete the slope-intercept formula: 3=13[?]+b3=\frac{1}{3}[?]+b.

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Problem 2351

Find the slope of the line through (9,2)(-9,-2) and (5,1)(5,1), then use it in the slope-intercept formula.

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Problem 2352

Solve for xx in the equation: 13x+3=143\frac{1}{3} x + 3 = \frac{14}{3}.

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Problem 2353

Solve for xx: 13x+3=143\frac{1}{3} x + 3 = \frac{14}{3}.

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Problem 2354

Find the slope of the line through points (3,3)(-3,-3) and (5,10)(-5,10). Slope = [[][]][\frac{[]}{[]}]

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Problem 2355

Find two consecutive integers whose sum is 109.

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Problem 2356

Find three consecutive even integers whose sum is 24.

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Problem 2357

Find three consecutive integers whose sum is 81.

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Problem 2358

Find three consecutive odd integers that add up to 45.

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Problem 2359

Rewrite the equation 9x+3y=129 x + 3 y = 12 in function notation with xx as the independent variable.

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Problem 2360

Write the function 9x+3y=129x + 3y = 12 in function notation as f(x)f(x).

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Problem 2361

The garden table and bench cost \$600 together. The table costs three times the bench. Find the bench's cost.

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Problem 2362

Rewrite the equation y6x9=0y - 6x - 9 = 0 in function notation with xx as the independent variable.

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Problem 2363

Solve 2+16x=42+\frac{1}{6} x=-4. Find the value of xx.

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Problem 2364

Solve the equation 6x37=47-6 x - \frac{3}{7} = \frac{4}{7}. Find x=x =.

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Problem 2365

Solve 12x7=18-\frac{1}{2} x - 7 = 18 for xx. What is the value of xx?

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Problem 2366

Solve 9=27x+5-9=\frac{2}{7} x+5 for xx. What is the value of xx?

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Problem 2367

Find BCBC given AB=9AB=9, AC=5x1AC=5x-1, and BC=2x+2BC=2x+2.

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Problem 2368

Which expression equals 3m+m6m3m + m - 6m? Options: 13m1 - 3m, m3m - 3, 8m-8m, 2m-2m.

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Problem 2369

Solve the equation: 6x8=10x+166x - 8 = 10x + 16. Find the solution set.

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Problem 2370

Solve for yy in the equation: 3y9x=63y - 9x = -6.

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Problem 2371

Solve for yy: y+1=12(10x12)y + 1 = \frac{1}{2}(10x - 12)

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Problem 2372

Solve for yy in the equation: 3xy=93x - y = 9.

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Problem 2373

Solve for yy: y20=3(x6)y - 20 = -3(x - 6)

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Problem 2374

Find yy in the equation: 3xy=93x - y = 9.

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Problem 2375

Find the equation of a line through (4,4)(-4,4) that is perpendicular to y=12x+2y=\frac{1}{2}x+2.

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Problem 2376

Find the slope of the line through points (3,8)(-3,8) and (4,7)(4,7). Show your calculations.

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Problem 2377

Find the slope of the line through points (3,8)(-3,8) and (4,7)(4,7). Show your work.

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Problem 2378

Find the slope between points (0,0) and (1,30) on the line. Can you find another pair of points with a different slope?

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Problem 2379

A marine biologist studies a dolphin's speed. It swims 55 meters in 5 seconds. Graph the distance over time. How far in 1 second?

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Problem 2380

Find the constant of proportionality for the values: (-4, -24), (0, 0), (7, 42), (11, 66), (15, 90).

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Problem 2381

Find the cups of sugar for 1 cup of flour, given the ratio: 2 cups sugar to 5 cups flour.

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Problem 2382

Намери стойността на yy, ако x:y=2:3x: y=2: 3, x:z=4:3x: z=4: 3 и 2xy+z=152x - y + z = 15.

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Problem 2383

А) 20. Ако x:y=2:3x: y=2: 3, x:z=4:3x: z=4: 3 и 2xy+z=152x-y+z=15, намерете стойността на yy.

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Problem 2384

A merchant mixes xx kg of tea at \72/kgwith72/kg with ykgat$97/kgforamixturecostof$82/kg.Find kg at \$97/kg for a mixture cost of \$82/kg. Find x:y$ and profit from 15 kg of tea P sold at \$120/kg.

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Problem 2385

Solve the equation 4x+2=2(52x)4x + 2 = 2(5 - 2x).

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Problem 2386

En un congreso, la relación inicial es 8 varones por 5 mujeres. Tras retirar 25 mujeres, hay 5 mujeres por 12 varones. ¿Cuántas personas había inicialmente?

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Problem 2387

Solve for xx in the equation 7x+4=397x + 4 = 39. What is the value of xx? Options: 4, 5, 35, 43.

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Problem 2388

If the final price is \$3 after halving the new price, what was the original price before the \$2 increase?

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Problem 2389

Solve the equation: 14(x+12)=78\frac{1}{4}\left(x+\frac{1}{2}\right)=\frac{7}{8}.

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Problem 2390

Solve for xx in the equation 12x2=15\frac{1}{2} x - 2 = \frac{1}{5}.

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Problem 2391

Solve for xx: x55=35\frac{x-5}{5}=\frac{3}{5}.

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Problem 2392

Colleen uses blue yarn bb and red yarn rr. What equation shows their proportional relationship? Options: (A) b=25rb=\frac{2}{5} r, (B) r=25br=\frac{2}{5} b, (C) b=27rb=\frac{2}{7} r, (D) r=27br=\frac{2}{7} b.

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Problem 2393

Concert tickets cost \$35 and \$55. If 95 tickets sold for \$4325, find how many of each type were sold.

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Problem 2394

Find the inverse of the function f(x)=2x+1f(x)=2x+1.

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Problem 2395

Find the inverse of the function f(x)=19x+2f(x)=\frac{1}{9} x+2.

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Problem 2396

Find f(8)f(8) for the function f(x)=6x4f(x)=6x-4.

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Problem 2397

Dan completes a painting every 3 weeks. John shovels snow for 5 houses in 2 hours. How long for 13 houses? Baxter boys prep 25 papers in 3 min. Time for 131 papers?

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Problem 2398

In 2008, 345k girls played soccer and 458k in track. Rate: soccer +8k/yr, track +3k/yr.
a. Write equations for yy in terms of xx.
b. Show (22.5,525)(22.5, 525) is an approximate solution.

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Problem 2399

A train station parking garage has two plans: Plan A: R55 + R21 per day. Plan B costs given for days parked. Find the system of equations for total cost CC and days nn.

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Problem 2400

Graph the line given by the equation y+2=2(x+1)y + 2 = 2(x + 1). Select points on the graph and submit.

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