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23 February, 23:30

Let f (x) = - 2x-7 and g (x) = - 4x+6 find (g o f) (-5)

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  1. 23 February, 23:42
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    Easy

    (g o f) (-5) = g (f (-5))

    first evaluate f (-5), then input the result into g (x)

    f (-5) = - 2 (-5) - 7

    f (-5) = 10-7

    f (-5) = 3

    g (3) = - 4 (3) + 6

    g (3) = - 12+6

    g (3) = - 6

    (g o f) (-5) = - 6
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