Galante 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 May, Kennel budgeted for 3,900 tenant-days, but its actual level of activity was 3,880 tenant-days. Kennel has provided the following data concerning the formulas used in its budgeting and its actual results for May Data used in budgeting Fixed element Variable element per month per tenant-day Revenue $30.40 Wages and salaries Food and supplies Facility expenses Administrative expenses Total expenses $2,900 300 7,900 7,700 $18,800 $6.40 11.20 3.40 0.40 $21.40 Actual results for May: Revenue $107,680 Wages and salaries Food and supplies Facility expenses Administrative expenses $23,490 $36,789 $19,240 $9,138 The net operating income in the planning budget for May would be closest to