Shoemaker Perkins Company uses a standard cost system for raw material X15. The actual cost is $10 per pound. The standard calls for 3 pounds of material X15 for each unit of the product manufactured. The company manufactured 500 units of the product in September. The standard price for Material X-15 purchased during the month was $4 per pound higher the actual cost. The material usage variance in September was $2,800 unfavorable. a. (0.5 point) What is the standard usage for producing 500 units? b. (0.5 point) What is the actual usage of material (in pounds)? c. (0.5 point) What is the purchase-price variance for Material X in September?