D) find the inflection points E) sketch the graph indicate the intercept, relative extrema, and inflection points, and plot additional points

8 (x) - -x' - 2x2 +6x +5 8. Given a. Find the intervals where the function is increasing and where it is decreasing. (Use derivative). (3 points) b. Find the relative minimum and relative maximum values. (2point) c. Find the intervals where the graph of the function is concave up and concave down. (Use derivative) (3 points)