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27 August, 23:20

Y = - 27x + 577, where x represents the number of weeks and y represents the amount of money left in her account. After how many weeks will Alma have $145 left in her account?

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  1. 27 August, 23:50
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    To solve this problem, plugin 145 where the y is located and then solve for x

    y = - 27x + 577

    145 = - 27x + 577

    145 - 577 = - 27x

    -432 = - 27x

    -432/-27 = - 27x/-27

    16 = x

    x = 16

    After 16 weeks she will have $145 dollars in her account.
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