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Find f (-1) if f (x) = -3x-5

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  1. 18 June, 11:04
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    Use the substitution method

    f (x) = -3x-5

    f (-1) = 3 (-1) - 5

    Do the bracket first then - 5

    -3-5

    f (-1) = -8

    Answer: f (-1) = -8
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