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27 June, 03:21

Given f (x) = - 10x + 45, find x when f (x) = 15.

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  1. 27 June, 07:13
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    3 = x

    Step-by-step explanation:

    f (x) = - 10x + 45

    f (x) = 15

    15 = - 10x + 45

    Subtract 45 from each side

    15-45 = - 10x+45-45

    -30 = - 10x

    Divide each side by - 10

    -30/-10 = - 10x/-10

    3 = x
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