Determine where the function is increasing and where it is decreasing.f(x) = x2 + 8x + 7
A. increasing on (-4, ?)
decreasing on (-?, -4)
B. increasing on (-?, -9)
decreasing on (-9, ?)
C. increasing on (-9, ?)
decreasing on (-?, -9)
D. increasing on (-?, -4)
decreasing on (-4, ?)
Answer: A
Mathematics
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