Question

An open box is made from a square piece of sheet metal 19 inches on a side by cutting identical squares from the corners and turning up the sides. Express the volume of the box, V, as a function of the length of the side of the square cut from each corner, x.
A. V(x) = 361x

B. V(x) = (19 - 2x)2

C. V(x) = x(19 - 2x)

D. V(x) = x(19 - 2x)2