The following is total monthly budgeted cost and activity information for the four activity centers in the billing department of Oregon Power Company: Variable Fixed Activity Center Statement inquiry Correspondence $74,656 $156,000 $28,000 $9,632 Cost Driver 3,200 labor hours 2,800 letters 2,400,000 lines 18,000 accounts Account billing $144,000 $88,000 Payment verification $9,540 $76,000 In September, actual total costs and activity were as follows: Driver Amount 3,060 labor hours Activity Center Statement inquiry Correspondence Account billing Payment verification Total Costs s227,611 $36,740 $229,408 586,378 2,650 letters 2,370,000 lines 17,990 accounts Compute the flexible-budget variances for the following two activity cost items (round unit costs to two decimal places and enter favorable variances as positive numbers and unfavorable variances as negative numbers): Account billing -221.2 Payment verification -543.3 Submit Answer Incorrect. Tries 1/5 Previous Tries