Sales Analysis A company's total sales (in millions of dollars) t months from now are given by S(t) - 0.03t3 + 0.5t2 + 2t + 3 Use this sales model to answer questions 1-3 below.Use the sales model above to answer this question. What are the units of S' (13)? O dollars O months O millions of dollars per year O dollars per day O dollars per month O millions of dollars O millions of dollars per month