Find g (f (x)) given f (x) = 3x - 2 and g (x) = 5x

Question

A: 8x - 2

B: 15x - 2

C: 15x^2 - 10x

D: 15x - 10

Answer 1

f(x) = 3x - 2

g(x) = 5x

To find g(f(x)), just replace the x's in g(x) with f(x):

g(x) = 5x

g(f(x)) = 5f(x) = 5(3x-2) = ____? Multiply it out to get the answer.