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6 February, 16:52

If f (x) = - 2x - 5 and g (x) = x^4 what is (gºf) (-4)

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  1. 6 February, 17:08
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    81

    Step-by-step explanation:

    (g∘f) (-4) is another way of writing g (f (-4)).

    First, find f (-4):

    f (-4) = - 2 (-4) - 5

    f (-4) = 3

    Now plug into g (x):

    g (f (-4)) = g (3)

    g (f (-4)) = 3^4

    g (f (-4)) = 81
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