Spohn Clinic uses client-visits as its measure of activity. During February, the clinic budgeted for 3,400 client-visits, but its actual level of activity was 3,370 client-visits. The clinic has provided the following data concerning the formulas to be used in its budgeting for February: Revenue Personnel expenses Variable element Fixed Element per client-visit per Month $ 0 $26,100 $28.10 $ 7.70 Medical supplies Occupancy expenses Administrative expenses Total expenses 900 5,600 4,300 $36,900 5.10 0.80 0.40 $14.00 The net operating income in the planning budget for February would be closest to: