Arthur wants to make a raised rectangular frame, shown below, to grow basil plants. The basil plants are transplanted, with their soil, from 2-
in-wide pots into the frame. The diagram at the right below shows a top-down view of the frame. Each circle represents a transplanted basil
plant with its soil. Arthur will add more soil to the frame until the soil is 3x in deep.
Write a polynomial function V to represent the volume of soil in the frame in terms of X?