For the given functions f and g, find the requested function and state its domain.f(x) = 9x + 1; g(x) = 6x + 3Find f ? g.
A. (f ? g)(x) = 54x2 + 33x + 3; all real numbers
B. (f ? g)(x) = 54x2 + 3; {x|x ? 3}
C. (f ? g)(x) = 15x2 + 33x + 4; all real numbers
D. (f ? g)(x) = 54x2 + 9x + 3; {x|x ? 3}
Answer: A
Mathematics
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A. 49x2 + 14x - 5 B. 7x2 - 9 C. x2 + 7x + 3 D. x2 - 7x - 7
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Determine where the function is increasing and where it is decreasing.g(x) = 2x2 + 40x + 196
A. decreasing on (-?, 10) increasing on (10, ?) B. increasing on (-?, -10) decreasing on (-10, ?) C. increasing on (-?, -20) decreasing on (-20, ?) D. decreasing on (-?, -10) increasing on (-10, ?)
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