Managers influence cost behavior through their . technology decisions product and service decisions capacity decisions only A and B A, B and C . e. The cafeteria department at Tonka Center incurred the following costs for September 20x7: Monthly Cost Manager's salary Hourly workers' wages and benefits Food Equipment depreciation and rental Supplies Total cafeteria costs September 20x7 Amount $9,000 28,000 12,000 11,000 4,000 $64,000