Question

Let f(x) = 3x – 42 and g(x) = 5x.

What is (f ◦ g)(x) ?
Use complete sentences to describe the method you used to solve this problem.

Answer 1

f(g(x)) = f(5x)
let's start there... (not the answer)

Answer 2

than what

Answer 3

look at f(x) and its rule...
f(x) = 3 * x - 42:

f(7) = 3 * 7 - 42
f(23) = 3 * 23 - 42
f(pi) = 3 * pi -42
f(mn) = 3 * (mn) - 42

what about
f(5x) = ???