Evaluating Functions

What is f(6) for the function f(x)=3x-8

• -8

• 10

• -144

• answer not here

$f\left(x\right)=5x-12$ What is $f\left(-4\right)$

• -32

• -3

• -12

• 3

What is f(5) for the function f?

f(x) = 2(x - 7)

• 3

• -4

• -3

• 1

• 32

• 0

• -4

• 77

• 13

• 8

• 16

• answer not here

• 13

• 8

• 16

• answer not here

Find f(2)

• 8

• 10

• 12

• 14

Find x if f(x) = 12

• -2

• -1

• 0

• 1

Find f(0)

• 6

• 8

• 10

• 12

The commission of a sales representative can be modeled by C(x) = 4x - 10, where x is the number of items sold.  If the sales representative sales 30 items, how much commission will they earn?

• $20
• $120
• $5
• $110