Question

For f(x) = −2x + 12, find f(x) when x = −3.

Answer 1

f(-3)= 18

Explanation:

step 1: sub -3 in the equation f(x).

f(x)= -2x+12

f(-3)= -2×-3+12

step2: simplify to solve for f(-3).

=6+12

=18