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OpenStudy (poetryprincess):
A cube has side length x. One side of the cube is increased by 4 inches, and another side is doubled. The volume of the new rectangular prism is 450 cubic inches. The equation 2x^3+8x^2=450 can be used to find x. What was the side length of the original cube? Use a graphing calculator and a system of equations to find the answer. A.4 inches B.5 inches C.9 inches D.10 inches
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