Find those values of x for which the given function is increasing and those values of x for which it is decreasing.y = 27x - x3
A. Increasing for x < -3, x > 3, decreasing for -3 < x < 3
B. Increasing for -9 < x < 9, decreasing for x < -9, x > 9
C. Increasing for -3 < x < 3, decreasing for x < -3, x > 3
D. Increasing for x < 3, decreasing for x > 3
Answer: C
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