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21 September, 10:15

If f (x) = x + 4 and g (x) = x, what is (gºf) (-3) ?

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  1. 21 September, 10:34
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    (gºf) means solve f (x) first, then use that for g (x)

    In the equation for f (x) replace x with - 3:

    f (x) = x + 4 = - 3 + 4 = 1

    Now replace the x in the equation for g (x) with 1

    g (x) = x = 1
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