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:

	Fixed Element per Month	Variable element per client-visit
Revenue	$ 0	$28.10
Personnel expenses	$26,100	$ 7.70
Medical supplies	900	5.10
Occupancy expenses	5,600	0.80
Administrative expenses	4,300	0.40
Total expenses	$36,900	$14.00

The medical supplies in the flexible budget for February would be closest to: