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16 May, 03:52

If f (x) = 3x + 7, find f (a - 1)

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  1. 16 May, 04:13
    0
    3a+4

    Step-by-step explanation:

    f (x) = 3x + 7,

    Let x = a-1

    f (a - 1) = 3 (a-1) + 7

    Distribute

    =3a - 3 + 7

    = 3a + 4
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