Step-by-step explanation:
my answer is in the image above
Your answer will be 96.
Proof:
Step one: Subtract 14 from 30 30-14=16
Step two: Multiply the difference by 6 16x6=96
Hope this helps!
(fg)(x)=f(g(x))
So all you have to do is plug the g(x) in
3(3x^2)+9=f(x)
9x^2+9=f(x)