Activity 5.1 Review

Evaluate r(3)

• r(3) = 16

• r(3) = 12

• r(3) = 13

• r(3) = 0

• f(-2) = -1

• f(-2) = -9

• f(-2) = 9

• f(-2) = 0

Evaluate f(x) = x² for f(-8)

• 64
• -64
• -16
• 16

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

• Only plug a 1 into the left side

• Only plug a 1 into the right side

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Evaluate f(-2) if f(x) = x + 3

• -1
• 1
• 5
• -5

Given g(x) =
 4x - 7, find g(-9). 

• g(-9) = 29
• g(-9) = -43

Let g(x)=9x+24, find g(3).

• 3

• 33

• 51

• -2.66