Determine where the function is increasing and where it is decreasing.f(x) = x2 + 8x + 7

A. increasing on (-9, ?)
decreasing on (-?, -9)
B. increasing on (-4, ?)
decreasing on (-?, -4)
C. increasing on (-?, -4)
decreasing on (-4, ?)
D. increasing on (-?, -9)
decreasing on (-9, ?)


Answer: B

Mathematics

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