Question

PLEASE HELP! Given the function f(x) = 3x2 − 4, what is f(-2)?

A. -40
B. -16
C. 8
D. 32

Answer 1

Answer: Variant C

Explanation:

f(x) = 3x^2 − 4

For finding f(-2) just replace x with - 2 like this:

f(-2)=3*((-2))^2-4=3*4-4=12-4=8