Determine where the function is increasing and where it is decreasing.f(x) = -x2 + 10x
A. increasing on (5, ?)
decreasing on (-?, 5)
B. increasing on (-?, -5)
decreasing on (-5, ?)
C. increasing on (-5, ?)
decreasing on (-?, -5)
D. increasing on (-?, 5)
decreasing on (5, ?)
Answer: D
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