A rectangular box is twice as long as it is wide. The height of the box is 3 feet less than the width. If the box is x feet wide, what polynomial represents its volume in cubic feet?
A. 4x-3

B. 2x^3+6x^2

C. 2x^2-6x

D.2x^3-6x^2

Question

A rectangular box is twice as long as it is wide. The height of the box is 3 feet less than the width. If the box is x feet wide, what polynomial represents its volume in cubic feet?
  A. 4x-3
 	
  B. 2x^3+6x^2
 	
  C. 2x^2-6x
 	
  D.2x^3-6x^2

mathstudent55 · Answer

box is x feet wide
W = x 

twice as long as it is wide 
If the width is x, then L = ?

aric200 · Answer

The width of the box is x. 
The length of the box is = 2 * x. 
Height of the box = x - 3.
Volume of box = length * width * height 
= 2x * x * (x-3) = 2x^2 * (x-3) 
Which= 2x^3 - 6x^2

aric200 · Answer

Where are you confused?

anonymous · Answer

I understand now. I was just misreading. Thank you!