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28 January, 06:05

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The cost CC (in dollars) of making n watches is represented by C=15n+85 C=15n+85. How many watches are made when the cost is $385?

The cost CC (in dollars) of making nn watches is represented by C=15n+85C=15n+85. How many watches are made when the cost is $385?

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  1. 28 January, 09:50
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    C = 15n + 85 ... when C = 385

    385 = 15n + 85

    385 - 85 = 15n

    300 = 15n

    300/15 = n

    20 = n < = = 20 watches were made
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