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	$77,216	$154,000	3,200 labor hours
Correspondence	$10,024	$21,000	2,800 letters
Account billing	$150,000	$85,000	2,500,000 lines
Payment verification	$8,930	$78,000	19,000 accounts

In September, actual total costs and activity were as follows:

Activity Center	Total Costs	Driver Amount
Statement inquiry	$234,669	3,330 labor hours
Correspondence	$32,197	2,930 letters
Account billing	$229,994	2,420,000 lines
Payment verification	$87,401	18,930 accounts

Required Compute the flexible-budget variances for the following two activity cost items (round variable costs per unit to two decimal places and enter favorable variances as positive numbers and unfavorable variances as negative numbers): Payment verification: Correspondence:

Hello, please please help I am struggling to start! I am trying to figure out the payment verification and correspondence for this problem. Please help!