Question

What is the value of f(x) when x=-3?

f(x) = 2x² +4x+ 10

A: -14
B: -8
C: 16
D: 34

Answer 1

Answer C. 16

You replace the x’s with -3 in parenthesis

Answer 2

C 16

Explanation:

well, you put the given value of x into all the places where the function says "x", and then you calculate.

that's all.

f(-3) = 2(-3)² + 4(-3) + 10 = 2×9 - 12 + 10 = 18 - 12 + 10 = 16