Mrs. Phillips is reorganizing her office! She needs to create a box to hold all of her math
gadgets. It will be made from a rectangular piece of stiff cardboard, having dimensions
length 11 inches, width 10 inches, and height x inches, created by cutting out square corners with side length x and folding up the sides.

(A) Write an equation for the volume, V, of the box in terms of x.

(B) Use Desmos to estimate the value of x, to the nearest tenth, that gives the greatest volume. You must use DEMSOS to receive credit; no drawings or other graphs will be accepted. Below is the link to the DESMOS graphing calculator