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 $6,500 $15,500 260 suppliers Invoicing $11,440 $28,800 880 invoices

In November, actual costs and activity were as follows:

Activity Total Costs Driver Amount Supplier relations $20,401 195 suppliers Invoicing $39,545 868 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)?