Mmanagerial hw

9. The D.K. Pizza House has provided you with the following information on its costs at various levels monthly sales. Monthly sales in units 3,000 6,000 9,000 Cost of food sold 4,500 9,000 13,500 Payroll costs 3,500 5,000 6,500 Supplies 600 1,200 1,800 Utilities 360 420 480 Other operating costs 1,500 3,000 4,500 Building rent 1,000 1,000 1,000 Depreciation 200 200 200 Total $11,660 $19,820 $27,980 Required: 1. Identify each cost as variable, xed or mixed? 2. Develop an equation to estimate total costs at various levels of activity? 3. Project total costs with monthly sales of 8,000