Leven Clinic uses client-visits as its measure of activity. During September, the clinic budgeted for 3,000 client-visits, but its actual level of activity was 3,050 client-visits. The clinic has provided the following data concerning the formulas to be used in its budgeting for September. Revenue Personnel expenses Medical supplies Occupancy expenses Administrative expenses Total expenses Fixed element per month Variable element per client-visit $ 0 $ 31.00 $ 23,900 $ 10.70 1,400 3.90 5,700 1.10 5,100 0.10 $ 36,100 $ 15.80 The personnel expenses in the planning budget for September would be closest to: