Please answer using 1st and 2nd derivative tests

Example 7: The graph of the derivative f" of a continuous function f(x) on [0,9] is shown below. Answer the following questions in complete sentences. (a) On what open interval(s) is f decreasing? Justify. (b) At what value(s) ofx does f have a local maximum or minimum? Justify. (c) On what intervals is f concave up? Justify. (cl) State the inflection values of f Justify. (e) Assuming that [(0) = 0, sketch a graph off. If possible, determine the x-value(s) at which f attains its maximum andfor minimum value(s)