$($Section $2\mathrm{.}7)$ Let h$($x$)=$f$($x$)*$g$($x$),$ and k$($x$)=$f$($x$)/($g$)($x$).$ Use the figures below to find the exact values of the indicated derivatives. HINT: You should use exact function and derivative values in your computations. You may need to find the equations of lines to find exact function values.

A$.$ h$^(\text{'})(1)=$

B$.$ k$^(\text{'})(-2)=$

$($Enter dne for any answer where the derivative does not exist.$)$