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30 October, 21:30

F (x) = 4x-7 when f (x) = 8

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  1. 30 October, 21:57
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    Since both are equivalent to f (x), 4x-7 must equal 8

    4x-7=8

    Add 7 to both sides

    4x = 15

    Divide both sides by 4

    x=15/4

    Final answer: x=15/4
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