For the given functions f and g, find the requested function and state its domain.f(x) = 9 - 7x; g(x) = -3x + 7Find f + g.
A. (f + g)(x) = -3x + 9; {x| x ? 3}
B. (f + g)(x) = -4x + 16; {x|x ? - 4}
C. (f + g)(x) = -10x + 16; all real numbers
D. (f + g)(x) = 6x; all real numbers
Answer: C
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