Please help me solve this...

Question

1. A box with a capacity of 3300 cubic inches. The length of the box should be 7 inches greater than the height and the width should be 5 inches less than the height. What are the dimensions of the box?

2. A candy factory needs a box with a volume of 240 cubic inches. The height should be 2 inches less than the width and the length is 5 inches greater than the width. What are the dimensions of the box?

Answer 1

L=7+H

W=H-5

(7+H)(H-5)H = 3300

H^3 +2H^2 -35H -3300 = 0

H=slightly less than 15.1 meters

L= 22.1

W = 10.1