Answer:
<h2>x= -2</h2>
Step-by-step explanation:

Collect like terms and simplify

Divide both sides of the equation by 8

Simplify

Isn’t there supposed to be a picture?
Answer:
B
Step-by-step explanation:
Using a graphing calculator, the graph shows an almost parabola like shape between 0 and 12
Plus if the width was equal or greater than twelve we would have a 0 or even negative volume which is impossible