Evaluating Functions and Function Notation

What does f(x) represent in function notation?

• The domain of the function

• The input of the function

• The name of the function

• The output of the function

If f(x) = 2x + 4, what is f(9)?

• 24

• 18

• 20

• 22

Given f(x) = 2x + 4, find x when f(x) = 9.

• 2

• 2.5

• 3

• 3.5

If g(x) = 1.5x - 10, what is g(10)?

• 0

• 5

• 10

• 15

Given g(x) = 1.5x - 10, find x when g(x) = 5.

• 5

• 7.5

• 10

• 12.5

If f(x) = (2x - 12) / 3, what is f(-15)?

• -14

• -12

• -10

• -8

Given f(x) = (2x - 12) / 3, find x when f(x) = 9.

• 15

• 17.5

• 19.5

• 21

If b(x) = -x + 8, find x when b(x) = -10.

• 12

• 10

• 16

• 18

What is b(-8) if b(x) = -x + 8?

• 24

• 8

• 0

• 16

Given h(x) = 3x^2 - 7, what is the range for the domain values -1, 2, and 5?

• -4, 5, 68

• -4, 7, 68

• -2, 5, 70

• -2, 7, 70