Answer
(a) $h(4)=53$
(b) $h(-1)=8$
Work Step by Step
RECALL:
$h(r)$ represents the value of the function $h$ when $r=x$.
Replace $r$ with the given value to obtain:
(a)
$h(4) = 3(4^2) +5
\\h(4)= 3(16)+5
\\h(4)=48+5
\\h(4)=53$
(b)
$h(-1) = 3(-1)^2+5
\\h(-1)= 3(1)+5
\\h(-1)=3+5
\\h(-1)=8$
