Question: A 20 ft-long rod is cut into 12 pieces, which are welded together to form the frame of a rectangular box. The length of the

A 20 ft-long rod is cut into 12 pieces, which are welded together to form the frame of a rectangular box. The length of the box's base is 15 in. longer than its width.
(a) Create a polynomial expression for the volume V in terms ofx.
(b) Make a plot of V versus x.
(c) Determine the x that maximizes the volume and determine that volume.

hI x+15

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