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Mathematics 20 Online
OpenStudy (anonymous):

William found the area of a rectangular room with the function shown below. R(x)=4x^2-40x Which statement best describes (x - 10), the length of one side? A. One side is ten units less than four times the other side. B. One side is ten units less than the other side. C. One side is ten units less than one-fourth of the other side. D. One side is ten units less than four more than the other side.

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