f(3) = 9

Since f(x) and g(x) are inverse functions for x ≥ 0, g(9) = f(3) =______________

Recall that f(x) and g(x) are inverse functions for x ≥ 0, and the definition of an inverse function: f(g(x)) = x.

Because f(x) is even, f(−3) = f(3) = part a = _____

Plug in your answer from part (a).

Refer to the hint in part (e).