Complete this activity. Mr. Home buys two quarts of ice cream, one carton of soda, and three sacks of cookies for a Sunday School party. The respective unit prices are 60 cents, 70 cents, and 45 cents for each unit. On his way home Mr. Home remembers that he will have several extra visitors, returns to the same store, and buys three times the same order. Find Mr. Home's total expense by matrix calculations.