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10 March, 20:52

The formula C = 15x + 30 relates the total cost of reserving a shelter at the water park, where x is the number of hours needed. If you have $90 available, how many hours can you use the shelter?

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  1. 10 March, 21:08
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    90 = 15x + 30

    ... subtract 30

    60 = 15x

    ... divide 15

    x = 4 hours
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