Evaluate a composite function?

Question

Answer 1

f(g(x)) => (4 + 3x)² - 20

so, f(g(x)) = 9x² + 24x - 4

Hence, f(g(-3)) = 9(-3)² + 24(-3) - 4 => 81 - 72 - 4 = 5

:)>

Answer 2

First find g(-3)

g(-3) = 4 + 3 * (-3) = 4 - 9 = -5

Now find f(-5)

f(-5) = (-5)^2 - 20 = 25 - 20 = 5

There you go.