Question 1

$Find the sum: (3x^3 + 3x^2 - x + 1) + (8x^3 - 2x^2 - 3x - 2)$

Accepted Answer

$11x^3+ x^2- 4x-1$

Answer

11x^3+x^2+3x+1

Answer

$11x^3+5x^2+4x+3$

Question 2

Find the inverse of the following function:         $f(x) = 3x - 5$

Accepted Answer

$\frac{1}{3}x+\frac{5}{3}$

Answer

3x-5

Answer

$\frac{5x}{3}$

Answer

x - 3

Question 3

Solve the equation for d: $C = 5d^2$

Accepted Answer

$d=\sqrt{\frac{C}{5}}$

Answer

$d=\frac{C}{5}$

Answer

$d=\frac{C^2}{5}$

Question 4

Find the vertex of the quadratic.

Accepted Answer

(-3,-3)

Answer

(-4.8,0)

Answer

(-1.3, 0)

Answer

(0,6)

Question 5

What are the x-intercepts of the quadratic?

Accepted Answer

x = -1 and x = 3

Answer

x = 3

Answer

x = -3

Answer

x = 1 and x = -3

Question 6

Sarah has a new job and the function for her income is $I(x) =12.50x + 200$ based on how many hours she works. What does the slope mean?

Accepted Answer

every hour she earns $12.50

Answer

money

Answer

her income

Answer

her income after x hours

Question 7

Find the sum: $(8x^4+2x^2-3) + (3x^3-7x^2+x+1)$

Accepted Answer

$8x^4+3x^3-5x^2+x-2$

Answer

$8x^4+3x^3+9x^2+x+4$

Answer

$11x^4+9x^2+x+4$

Question 8

Find the product: $(x+5)(2x-1)$

Accepted Answer

$2x^2+9x-5$

Answer

$3x^2+11x+6$

Answer

$2x^2+11x+5$

Question 9

What equation is graphed?

Accepted Answer

$-3x^2+x+5$

Answer

$-x^2+x + 1.5$

Answer

$2x^2-x + 3$

Question 10

Solve: $2x^2=18$

Accepted Answer

x=3 and x = -3

Answer

x = -3

Answer

x = 3

Answer

x = 4.5

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