Please answer it step by step, so I can easily follow it.

9. Sketch the curve defined by g(x) = x3(x + 3). 10. Find the horizontal asymptotes for each of the following: X a. f(x) = x2 + 1 b. 8(t) = V12 + 4t - V 12 + t 11. Show that, for any cubic function of the form y = ax + bx- + ex + d, there is a single point of inflection, and the slope of the curve at that point is c - b2 3a