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15 March, 21:43

The selling price of x number of a certain stereo can be modeled by the function R (x) = 160x. The total cost of making x stereos is C (x) = 71x - 0.02x2. What is the percent markup for 31 stereos?

23%

127%

227%

278%

+5
Answers (1)
  1. 15 March, 21:54
    0
    227%

    i think is the answer
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