(b) Use the high-low method to develop a schedule identifying the amount of each cost that is fixed per month or variable per unit. Total the amounts under each category to develop an equation for totai monthly costs. Round variable cost answers to two decimal places. Fixed Costs Cost of food sold 5 5 x Wages and fringe benefits: x Fees paid delivery help x Rent on building x Depreciation on equipment x Utilities x Supplies (soap, foor wax etc.) x Administrative costs x Total costs equation 5 5 x (c) Predict total costs for a monthly sales volume of 9.100 units. 5