The following is total monthly budgeted cost and activity information for the four activity centers in the billing department of Oregon Power Company:

Activity Center Variable Fixed Cost Driver Statement inquiry $79,068 $160,000 3,300 labor hours Correspondence $9,180 $20,000 2,700 letters Account billing $147,000 $78,000 2,450,000 lines Payment verification $11,395 $80,000 21,500 accountsActivity Center Total Costs Driver Amount Statement inquiry $236,575 3,180 labor hours Correspondence $28,923 2,830 letters Account billing $218,004 2,350,000 lines Payment verification $91,163 21,530 accounts