Use the given graph of fover the interval (0,7) to find the following. (a) The open intervals on which fis increasing. (Enter your answer using interval notation.) (0.1) U (3,7) (b) The open intervals on which fis decreasing. (Enter your answer using interval notation.) (1,3) (c) The open intervals on which is concave upward. (Enter your answer using interval notation) (d) The open intervals on which fis concave downward. (Enter your answer using interval notation.) (x, y) = (1 (e) The coordinates of the points of inflection. (y (smallest x-value) (x, y) = (x,y) (largest x-value)