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13 February, 10:55

Diane has rented a movie from Cine-Flix and is returning it late. The equation y = 2x + 4 represents the cost y (in dollars) of renting a movie after x days of late charges. Graph the equation and determine how much it will cost Diane after 3 days of late charges.

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  1. 13 February, 11:26
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    Y = 2x + 4

    x : days of late charges

    y : cost

    So you would have to substitute 3 into x because Diane is 3 days late.

    y = 2x + 4

    y = 2 (3) + 4

    y = 6 + 4

    y = 10

    It would cost $10.
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