For the given functions f and g, find the requested function and state its domain.f(x) = x + 2; g(x) = 9x2Find f + g.
A. (f + g)(x) = 9x2 - x - 2; all real numbers
B. (f + g)(x) = -9x2 + x + 2; all real numbers
C. (f + g)(x) = 9x2 + x + 2; all real numbers
D. (f + g)(x) = 9x2 + x + 2; {x|x ? -2}
Answer: C
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