Answer
With $h(x)=\sqrt[3]{x},\quad g(x)=x+4,\ \quad$and $f(x)=x^{9}$,
$G(x)=f(g(h(x)))=(f\circ g\circ h)(x)$
Work Step by Step
If we were to calculate by hand,
we would find the cube root of the number $\qquad$...$ h(x)=\sqrt[3]{x}$,
then add 4 (to the number )$\qquad$ .... $g(x)=x+4$
and then raise to the power 9 $\qquad$ .... $f(x)=x^{9}$
In this way, $G(x)=f(g(h(x)))=f\circ g\circ h(x)$
