Are the compositions of f(x) = 1 and g(x) = 2 commutative? Why or why not?

Since f(x) = 1 for every input, f(g(x)) = 1. Since g(x) = 2 for every input, g(f(x)) = 2. These compositions are not equal, so the compositions are not commutative; choice D states this reason.

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