Suppose f(a) is some function, and you determine the derivative is: f' (a) = - 5(2 +2)(2 - 3) Find the interval(s) on which the function is increasing and the interval(s) where the function is concave down. Write the intervals using interval notation (do not include endpoints in your interval). Interval(s) where f (x) is increasing: Interval(s) where f(a) is concave down: Report the x - value of the local maximum