Question 204981
Melissa plans to ship a computer in a cubic box that measures x inches on a side.
 She later determines that her shipping cost will be less if she uses a
 rectangular box that is 3 inches shorter and 5 inches longer than the cubic box.
 Write an equation V(x) for the volume of the new box 
:
Assuming that the new box has the same height (x)
:
V(x) = x * (x+5) * (x-3)
FOIL
V(x) = x * (x^2 - 3x + 5x - 15)
:
V(x) = x * (x^2 + 2x - 15)
Multiply by x
V(x) = x^3 + 2x^2 - 15x cu/inches