Rooney Corporation paid one of its sales representatives $8,500 during the month of March. The rep is paid a base salary plus $14 per unit of product sold. During March, the rep sold 160 units. Required Calculate the total monthly cost of the sales representative's salary for each of the following months: May July April 200 June 210 110 120 Month Number of units Total variable cost Total fixed cost Total salary cost $ $ 0 $ 0 $ 0 A 0