For the given functions f and g, find the requested function and state its domain.f(x) = 5x + 9; g(x) = 8x + 2Find f ? g.

A. (f ? g)(x) = 13x2 + 82x + 11; all real numbers
B. (f ? g)(x) = 40x2 + 74x + 18; {x|x ? 18}
C. (f ? g)(x) = 40x2 + 82x + 18; all real numbers
D. (f ? g)(x) = 40x2 + 18; {x|x ? 18}

Answer: C

Mathematics

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