Consider the equation below. f(x) = 2x3 + 3x7 - 180x (a ) Find the interval(s) on which fis increasing. (Enter your answer in interval notation.) Find the interval(s) on which fis decreasing. (Enter your answer in interval notation.) (b) Find the local minimum and maximum values of f, local minimum local maximum (c) Find the inflection point. (x, y) = Find the interval on which fis concave up. (Enter your answer in interval notation.) Find the interval on which fis concave down. (Enter your answer in interval notation.)