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Mathematics 9 Online
OpenStudy (anonymous):

A company builds computers. It costs $6,700 to build 10 computers and $12,200 to build 20 computers. Which equation models the cost, C(x), as a linear function of the number of computers built, x? A. C(x) = 550x -1200 B. C(x) = 550x + 1200 C. C(x) = 1200x - 550 D. C(x) = 1200x + 550

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