lenci 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 5,270 units, but its actual level of activity was 5,220 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: fixed element per month variable element per unit revenue 0 $ 41.30 direct labor $ 0 $ 7.20 direct materials 0 17.40 manufacturing overhead 43,200 3.00 selling and administrative expenses 24,400 1.90 total expenses $ 67,600 $ 29.50