For the given function, find {a} Maximum (1')} Minimum (c) Point of Inection. Find the interval where the function is ({1} increasing {e} decreasing (f) concave up (g) concave down. Show fund 1\" line tests to verify your answers. {7 marks} y=x3+9x2+15111 a) Maximum b) Minimum c) Point of Inection d} Increasing e} Decreasing Concave up g} Concave down Make a sketch of the curve in question #1. Select appropriate scales on both x and y axes to show most detail and plot extra points as needed. (3marks)