Mr. Paulson has a rectangular fenced area that has a length of 24 feet and a width of 9 feet. He plans to create a new rectangular fenced area using the original fence materials. He is going to remove x feet from the length and add it to the width.
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Which expression below is one way to represent the difference, in square feet, between the new fenced area and the original fenced area?
A x2 + 14x
B x2 + 24x
C -x2 + 33x
D -x2 + 15x