Let fand g be the function from the set of integers to itself, defined by f(x) = 2x + 1 and g(x) g(x)= 3x + 4. Then the composition (f ° g(x)) of f and g is O A. 6x + 6 Ов. бх + 7 OC. 6x +9 O D. 6x + 8

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