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13 April, 21:32

F (-4) for f (x) = - 4x+9

f (-4) = ?

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  1. 13 April, 21:56
    0
    F (x) = - 4x+9

    Multiply f*x

    xF=9+4x

    Solve for X: - 4x+xF=9+4x-4x=0

    Combine like terms: - 4x+4x=0

    -4x+xF=9+0 = 9

    -9+-4x + xF = 0.
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