Banana Computer Co. plans to launch its latest consumer electronic device, the iPeel, early next year. Based on market research, it estimates that the market potential for the iPeel is 170,000 units, with coefficients of innovation and imitation of 0.07 and 0.31, respectively. a) If the iPeel is introduced on January 1, on what date will the sales peak? What will be the demand rate on that date, and how many units will have been sold? b) On what date will 90% of the sales have occurred? c) Plot the demand rate and cumulative demand as a function of time.