Answer
length is $9$ inches and width is $3$ inches
Work Step by Step
Based on item # $97,$ the volume of the box is $V(x)=x(x+4)(x-2).$ Since the height, $x,$ is given as $5$ inches, then the length, $x+4,$ is $9$ inches and the width, $x-2,$ is $3$ inches.