Question 1

Which factorization is equivalent to 4y2 − 17y + 15?

Accepted Answer

(y - 3)(4y - 5)

Answer

(4y - 3)(y -5)

Answer

(y + 3)(4y - 5)

Answer

(y - 3)(4y + 5)

Question 2

What is the difference between the exponential function graphed and the exponential function y = 3x - 1?

Accepted Answer

The horizontal asymptote of the graph is y = 0 and the horizontal asymptote of the graph.

Answer

The horizontal asymptote of the graph is y = 0 and the horizontal asymptote of the graph of the equation is y = 1.

Answer

The graph of the equation is shifted one unit to the right of the function graphed.

Answer

The graph rises to the right and graph of the equation rises to the left.

Question 3

The table on the left is that of a linear function, and the one on the right is that of an exponential function. Can you tell which function has the higher rate of growth? How?

Accepted Answer

The exponential function is growing faster, because it grows by a factor that is multiplied by the previous y-value instead of being added like the linear function.

Answer

The exponential function is growing faster, because at x = 0 the y-value of exponential function is larger.

Answer

There is not enough information to make a conclusion.

Answer

The linear function is growing faster, because at x = 3 the y-value of the linear function is larger.

Question 4

Find the zeros of the function 
f(x) = x^2 + 5x + 6.

Accepted Answer

x = -3 and x = -2 because the graph crosses the x-axis at -3 and -2.

Answer

y= -0.25 because that is the minimum value of the graph.

Answer

x = 2 and x = 3 because the graph crosses the x-axis at 2 and 3.

Answer

y=6 because the graph crosses the y-axis at 6.

Question 5

Which graph matches the equation y = -(x+2)^2 ?

Accepted Answer

A

Answer

D

Answer

C

Answer

B

Question 6

Write the expression in exponential  form.

Accepted Answer

x^1/2y^3/4z^1/4

Answer

x^6y^7z^4

Answer

x^1/2y^3/4z

Answer

x^2yz^4

Question 7

What is the domain of the function graphed?

Accepted Answer

D

Answer

C

Answer

B

Answer

A

Question 8

Which equation is modeled by the graph? Using the equation, about how many more cars are in the deck at 9:00 a.m. than at 8:30 a.m.?

Accepted Answer

y = 3x + 50; 90 cars

Answer

y = x + 50; 100 cars

Answer

y = 4x + 50; 75 cars

Answer

y = 3x - 50; 120 cars

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