Question

Let f(x) = 3x – 42 and g(x) = 5x.

Part 1 [4 points] What is (f ◦ g)(x) ?
Part 2 [2 points] Use complete sentences to describe the method you used to solve this problem.

Answer 1

(f ◦ g)(x)=f(g(x))
Substitute f(x) and g(x)
f(g(x))
f(5x)
3(5x)-42
15x-42