Darden Corporation uses the weighted-average method in its process costing system. The first processing department, the Welding Department, started the month with 18,600 units in its beginning work in process inventory that were 10% complete with respect to conversion costs. The conversion cost in this beginning work in process inventory was $17,700. An additional 87,000 units were started into production during the month. There were 20,000 units in the ending work in process inventory of the Welding Department that were 70% complete with respect to conversion costs. A total of $839,880 in conversion costs were incurred in the department during the month. The cost per equivalent unit for conversion costs for the month is closest to: Multiple Choice $8.886 $9.600 $8.610 $9.969 A $2.00 increase in a product's variable expense per unit accompanied by a $2.00 increase in its selling price per unit will Multiple Choice decrease the degree of operating leverage. decrease the contribution margin. have no effect on the break-even volume. have no effect on the contribution margin ratio