Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -3x2 + 24x + 144
A. Increasing on (-?, 0); decreasing on (0, -?)
B. Increasing on (-4, ?); decreasing on (-?, -4)
C. Increasing on (-?, -4); decreasing on (-4, -?)
D. Increasing on (-?, 4); decreasing on (4, -?)
Answer: D
Mathematics
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