Answer:
f(g(x)) = 3x + 8
g(f(x)) = 3x + 4
Explanation:
f(x) = 3x - 3
g(x) = x + 7
f(g(x)) = 3(x + 7) - 3
f(g(x)) = 3x + 21 - 3
g(f(x)) = (3x - 3) + 7
g(f(x)) = 3x - 3 + 7
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