Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -2x2 + 3x + 9

A. Increasing on (-?, 0); decreasing on ( 0, ?)
B. Increasing on ; decreasing on 
C. Increasing on (-?, 1); decreasing on ( -1, ?)
D. Increasing on ; decreasing on 


Answer: D

Mathematics

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A.

B.

C.

D.

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