Rodger's Cabinet Manufacturers uses flexible budgets that are based on the following manufacturing data for the month of July: Direct materials Direct labor Electric power (variable) Electric power (fixed) Supervisor salaries Property taxes on factory Straight-line depreciation $8 per unit $5 per unit $0.30 per unit $4,000 per month $25,000 per month $4,000 per month. $2,900 per month Prepare a flexible budget for Rodger's based on production of 10,000, 15,000, and 20,000 units.