There are three convenience stores in Gambier. This week, Store I sold 88 loaves of bread, 48 quarts of milk, 16 jars of peanut butter and 112 pounds of cold cuts. Store II sold 105 loaves of bread, 72 quarts of milk, 21 jars of peanut butter, and 147 pounds of cold cuts. Store III sold 60 loaves of bread, 40 quarts of milk, no peanut butter, and 50 pounds of cold cuts. (a) Use a 3 4 matrix to express the sales information for the three stores. (b) During the following week, sales on these products increased by 25%; sales at Store II increase by One-third, and sales at Store III increased by 10%. Write the sales matrix for that week. (c) Write a matrix that represents total sales over the two-week period.