Use the given graph of f over the interval 0 7 to find the following a The open intervals on which f is increasing Enter your answer using interval notation 0 b The open intervals on which f is decreasing Enter your answer using interval notation c The open intervals on which f is concave upward Enter your answer using interval notation d The open intervals on which f is concave downward Enter your answer using interval notation e The coordinates of the points of inflection x y smallest x value x y x y largest x value