Question

if f(x)=3x^2-2x+5, find f(-2)

a) -27
b) -11
c) -3
d) 21

Answer 1

Answer:

D

Step-by-step explanation:

f(x) = 3x^2 - 2x + 5

f(-2) means that wherever you see an x on the right, you put in the value of -2 for the x.

f(-2) = 3(-2)^2 - 2(-2) + 5

f(-2) = 3(4) + 4 + 5

f(-2) = 12 + 9

f(-2) = 21

The answer is D