Question

If f(x) = 7x2 - 4x, what is the value

of f(2)?
F -8
J 17
G 2
K 20
H 6

Answer 1

K 20

Explanation:

f(x) = 7x2 - 4x

f (2) = 7 (2)^2 - 4(2)

= 28 - 8

= 20

Since they replaced the x inside f(x) with 2, just do that the same to the right side, change all x into 2