A rectangular box has a length of (x + 6) inches, width of (x - 2) inches, and a height of (x - 1) inches.

a) write a polynomial that represents the volume of the box.
b) the volume of the box is 60 inches. Find the height, width, and length of the box.

For a, I got x^(3) + 3x^(2) - 16x +12. I need help with b.

Question

A rectangular box has a length of (x + 6) inches, width of (x - 2) inches, and a height of (x - 1) inches.

a) write a polynomial that represents the volume of the box.
b) the volume of the box is 60 inches. Find the height, width, and length of the box.

For a, I got x^(3) + 3x^(2) - 16x +12. I need help with b.

hartnn · Answer

your 1st part is correct
for 2nd part you equate volume expression to 60
so you will get a cubic equation i n x
solve it to height,width and length
can u solve the cubic equation??

anonymous · Answer

Yup, thanks :D