Given f (x) = x - 7 and g (x) = x2.

Find g (f (4)).

g (f (4)) = ?

Well lets first put the two equations into each other. g (f (x)) = (x-7) 2 < - - took g (x) and put f (x) in its x spot. from here we are just going to insert '4' were the x is. (4-7) 2=-6

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