Question

A box is constructed by cutting out square corners of a rectangular piece of cardboard and folding up the sides. If the cutout corners have sides with length​ x, then the volume of the box is given by the polynomial 4x^3-64x^2+240x.

Find the colume of the box when x=5 inches

Answer 1

100

Explanation:

f(x) = 4x^3 - 64x^2 + 240x

f(5) = 4(5³) - 64(5²) + 240(5)

f(5) = 100