May Assume a local Subway reported the following results for April and May. April Sandwiches sold 2,100 2700 COGS $1,575 $2,025 Wages and salaries $1,525 $1,675 Rent $1,500 $1,500 Depreciation $200 $200 Utilities $710 $770 Supplies $225 $255 Miscellaneous $113 $131 Total $5,848 $6,556 Required (show all the calculations) a. Using the high-low method, create a cost equation for each of the following costs in April cost of food, wages and salaries, rent, and total monthly costs b. Predict total costs for monthly volumes of 1,000 and 2,000 sandwiches