Question

F(x) = -22 – 9x
Find f(-2)

Answer 1

f(-2)= -4

Explanation:

plug in -2 for every x you see in the equation.

f(-2)= -22-9(-2)

= -22+18

= -4

therefore, f(-2)= -4

Answer 2

`\boxed {\tt f(-2)=-4}`

Explanation:

We are given the function:

`f(x)= -22-9x`

We want to find f(-2). Therefore, we must substitute -2 in for each x.

`f(-2)=-22-9(-2)`

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.

Multiply -9 and -2.

`f(-2)=-22+18`

Add 18 to -22.

`f(-2)=-4`

f(-2) is equal to -4 for f(x)=-22-9x