Cost Behavior Graphs 1 2 3 5 7 10 11 12 a. Wood costs for a chair manufacturer; the cost of direct materials per chair is $9.60 b. Customer service representatives are paid $12.75 per hour c. Monthly vehicle lease costs for a company that pays $320 per month plus $.17 per mile for any miles driven over 1,000 per month d. Monthly gas bill for the restaurant's delivery vehicles; cost of gas is constant at $3.90 per gallon e. Monthly factory equipment depreciation, straight-line method is used f. Monthly electric cost for a florist; $50 base monthly fee plus $.006 per kilowatt used g. Total salary costs for an office; managers are paid a salary and the other works are paid by the hour h. Oil disposal fees for an automotive maintenance company. The oil disposal fee is based on two components: a $200 base fee plus a usage fee (to encourage reduction of waste): Up to 10 barrels.............. 11-25 barrels............. More than 26 barrels......... ..$8 per barrel ..$10 per barrel ...$14 per barrel i. Monthly cell phone expense for a mobile grooming business; the cell phones are billed at a rate of $40 for unlimited voice and text for each cell phone j. Monthly copier costs; the lease is $250 per month with a fee of $0.01 per copy for any copies over 100,000 copies in that month 1