Wesolick Clinic uses client-visits as its measure of activity During August, the clinic budgeted for 2,900 client-visits, but its actual level of activity was 2,870 client-visits. The clinic has provided the following data concerning the formulas used in its budgeting and its actual results for August Data used in budgeting: Fixed element Variable element per monthper client-visit Revenue.. $40.50 $30,900 1,400 7.500 $12.80 5.60 2.00 0.20 $20.60 Medical supplies.... Occupancy expenses Total expenses.. $46.100 Actual results for August: Revenue Personnel expenses Medical supplies.. Occupancy expenses. $120375 $65,916 $16.872 $13.200 $6,974 The activity variance for personnel expenses in August would be closest to