College Math Placement Test Functions 2

Question 1

If f(x) = 2x² - 3x + 1, what is f(-2)?

Accepted Answer

15

Answer

11

Answer

3

Answer

-3

Question 2

Which of the following represents a one-to-one function?

Accepted Answer

f(x) = x³

Answer

f(x) = x²

Answer

f(x) = |x|

Answer

f(x) = sin(x)

Question 3

Given g(x) = √(x - 4), what is the domain of g?

Accepted Answer

x ≥ 4

Answer

x ≥ 0

Answer

x > 4

Answer

All real numbers

Question 4

If h(x) = 3x - 5 and h(a) = 7, what is the value of a?

Accepted Answer

4

Answer

2

Answer

6

Answer

12

Question 5

Which graph best represents a function with range [0, ∞)?

Accepted Answer

A parabola opening upward with vertex at (0,0)

Answer

A line through the origin with slope 1

Answer

A circle centered at the origin

Answer

A horizontal line at y = -1

Question 6

If f(x) = 5x + 2 and g(x) = x - 3, what is (f ∘ g)(x)?

Accepted Answer

5x - 13

Answer

5x - 1

Answer

5x + 5

Answer

5x² - 13x - 6

Question 7

A function f is defined so that f(2) = 7 and f(5) = 13. If f is linear, what is f(8)?

Accepted Answer

19

Answer

17

Answer

21

Answer

25