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23 February, 01:57

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

f (-4) = ?

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Answers (1)
  1. 23 February, 03:29
    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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