Question

4. If f(x) = 4x + 1 and g(x) = 2x2, what is the value of g(f(-8))?

A. 1922
B. 513
C. 257
D. -127

Answer 1

A. 1922

Explanation:

f(x) = 4x + 1 and g(x) = 2x^2

First find f (-8)

f(-8) = 4(-8) + 1 = -32+1 = -31

Then find g(-31)

g(-31) = 2 (-31)^2 =1922