Answer: A local maximum of the function f(x) occurs when x=-1.
Solution:
The function has a value of 16 when x=-4.
when x increases to -3 the function decreases to -2.
when x increases to -2 the function increases to 0, then a local minmum of the function f(x) occurs when x=-3.
when x increases to -1 the function continues increasing to 6.
when x increases to 0 the function decreases to 0, then a local maximum of the function f(x) occurs when x=-1.
when x increases to 1 the function continues decreasing to -2.
