Acme finds that its monthly revenue, in dollars, from the sale of x carry-on suitcases is 0.009x3 - 0.5x2 + 200x. Currently Acme is selling 21 carry-on suitcases monthly. a) What is the current monthly revenue? dollars per month b) How much would revenue increase if sales increased from 21 to 23 suitcases? dollars per month V V c) What is the marginal revenue when 21 suitcases are sold? dollars per suitcase v d) Estimate the revenue resulting from selling 22 suitcases per month. dollars per month v Check