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26 October, 10:50

If f (x) = 5 х - 7, what is f3) ?

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  1. 26 October, 11:10
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    8

    Step-by-step explanation:

    When a number is put in the parenthesises with x you substitute that number in every time you see x.

    f (x) = 5x-7

    f (3) = 5 (3) - 7

    f (3) = 15-7

    f (3) = 8
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