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g(x) = x + 7 when x =< 2
g(x) = 8 - x when x > 2
g(-2) Evaluate the first function
g(-2) = -2 + 7
g(-2) = 5
g(2) Evaluate the first function
g(2) = 2 + 7
g(2) = 9
g(8) Evaluate the second function
g(8) = 8 - 8
g(8) = 0