Managerial accounting please help

Jake's Roof Repair has provided the following data concerning its costs: Fixed Cost Cost per per Month Repair-Hour Wages and salaries $20,700 $15.00 Parts and supplies 7.20 Equipment depreciation 2,720 0.55 Truck operating expenses 5,710 1.80 Rent 4,700 Administrative expenses 3,860 0.60 For example, wages and salaries should be plus $15.00 per repair company expected to be $50.00 May, but actually worked 2,600 The company expects its sales to per repair-hour