Question

Do you guys know this

Answer 1

18

Explanation:

You solve the inner first, then move to the outer.

Let's take a look at g(x) first. It's stated that g(x) =
`x^2`. We plug in 3 for x and get 9 as the answer.

We then use this answer in f(x). The formula stated is f(x) = 2x. We plug in 9 for x and get 18.