2. Shown is the information needed to prepare a bank reconciliation for Warren Electric at December 31.

At December 31, cash per the bank statement was $15,200; cash per the company's records was $18,000.

Two debit memoranda accompanied the bank statement: service charges for December of $29, and a $950 check drawn by a customer, Jane Jones, marked NSF.

Cash receipts of $10,000 on December 31 were not deposited until January 4.

The following checks had been issued in December but were not included among the paid checks returned by the bank: no. 620 for $900, no. 630 for $2,800, and no. 641 for $4,479.

a. Prepare a bank reconciliation at December 31.

b. Prepare the necessary journal entry or entries to update the accounting records.