The following table lists the value of functions $g$ and $h$, and of their derivatives, $g'$ and $h'$, for $x=6$. $x$ | $g(x)$ | $h(x)$ | $g'(x)$ | $h'(x)$ :-: | :-: | :-: | :-: | :-: $6$ | $16$ | $-18$ | $0$ | $-21$ Let function $H$ be defined as $H(x)=4g(x)+5h(x)-7$. $H'(6)=$ [[☃ numeric-input 1]]