The following table lists the value of functions $f$ and $h$, and of their derivatives, $f'$ and $h'$, for $x=-1$.
$x$ | $f(x)$ | $h(x)$ | $f'(x)$ | $h'(x)$
:-: | :-: | :-: | :-: | :-:
$-1$ | $~~~3$ | $~~~2$ | $~~~5$ | $-6$
Let function $G$ be defined as $G(x)=3f(x)-2h(x)+6$.
$G'(-1)=$ [[☃ numeric-input 1]]