The following is monthly budgeted cost and activity information for two activities in the purchasing department of X Company:

Activity	Variable Costs	Fixed Costs	Cost Driver
Supplier relations	$7,360	$16,400	320 suppliers
Invoicing	$10,530	$24,700	810 invoices

In November, actual costs and activity were as follows:

Activity	Total Costs	Driver Amount
Supplier relations	$24,824	373 suppliers
Invoicing	$35,206	746 invoices

What was the flexible budget variance for the invoicing activity for November (assume that favorable variances are positive numbers and unfavorable variances are negative numbers)?