Piechocki Corporation manufactures and sells a single product. The company uses units as the measure of activity in its budgets and performance reports. During May, the company budgeted for 8,000 units, but its actual level of activity was 8,050 units. The company has provided the following data concerning the formulas used in its budgeting and its actual results for May: Data used in budgeting: Revenue Fixed element per month Variable element per unit $35.50 Direct labor $ 0 $ 6.10 Direct materials 0 12.10 Manufacturing overhead 37,000 1.80 Selling and administrative expenses 26,800 0.80 Total expenses $63,800 $20.80