Answer:

Explanation:
We are given the function:

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

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.
Multiply -9 and -2.

Add 18 to -22.

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