Question

F (x) = 3x + 1 ; g (x) = 3x What is f (g (x) )

Answer 1

f(g(x)) = 9x + 1

Explanation:

f(x) is defined as 3x + 1. To find f(g(x)), substitute g(x) = 3x for x in f(x):

f(g(x)) = 3(g(x)) + 1 = 3(3x) + 1 = 9x + 1

or:

f(g(x)) = 9x + 1