having a hard time with this one

ABC Company's budgeted sales for June, July, and August are 12,400,16,400, and 14,400 units respectively. The following cost behavior patterns are budgeted for ABC Company's operating expenses each month: Fixed costs: salaries, $2,200; rent, $5,200; depreciation, $2,600; advertising, $3,400 Mixed costs: utilities, $3,200+$0.40 per unit Variable costs per unit sold: sales commissions, $2.20; marketing promotions, \$1.20: supplies, \$0.85; bad debt expense, $0.35 Required: Prepare ABC Company's operating expense budget for June, July, and August. Note: Enter all values as positive value