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1 March, 18:37

The equation y = 1725 - 75x represents the amount of money y (in dollars) left in your lunch account after x weeks. 20 weeks go by. FInd the domain and range of the function.

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  1. 1 March, 21:38
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    Y = - 75x + 1725

    y = - 75 (20) + 1725

    y = - 1500 + 1725

    y = 225 = range

    225 = - 75x + 1725

    225 - 1725 = - 75x

    -1500=-75x

    -1500/-75 = - 75x/-75

    x = 20 = domain
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