Paulis Kennel uses tenant-days as its measure of activity, an animal housed in the kennel for one day is counted as one tenant-day. During February, the kennel budgeted for 4,200 tenant-days, but its actual level of activity was 4,180 tenant-days. The kennel has provided the following data concerning the formulas used in its budgeting and its actual results for February: Data used in budgeting: Fixed element per month Variable element per tenant-day $30.70 Revenue Wages and salaries Food and supplies Facility expenses Administrative expenses Total expenses $ 3,200 600 8,200 8,000 $20,000 $ 6.70 11.50 3.70 0.10 $22.00 Actual results for February Revenue Wages and salaries Food and supplies Facility expenses Administrative expenses $107,980 $ 23,520 $ 36,792 $ 19,270 $ 9, 144 The net operating income in the planning budget for February would be closest to