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g(x) = x - 1
(f o g) (x)
= 2(x - 1) - 1
= 2x - 2 - 1
= 2x - 3
2) f(x) = 2x + 3
g(x) = x + 1
(f o g) (x)
= 2(x + 1) + 3
= 2x + 2 + 3
= 2x + 5
(f o g) (-2)
= 2(-2) + 5
= 1