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Yesterday, 21:42

For f (x) = 4x+1 and g (x) = x^2 - 5, find (fog) (4)

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  1. Today, 00:30
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    (fog) (4) is the same thing as: f (g (4)). This is asking us to find the value of g (4) and plug it into f (x) as x. First let's find g (4):

    g (4) = 4^2 - 5 = 16 - 5 = 11

    Plug x=11 into f (x):

    f (11) = 4 (11) + 1 = 44 + 1 = 45

    The answer is 45.
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