Swenson Co. is a wholesaler of office products. An aging of the company's accounts receivable on December 31, 2007 is presented below: % Balance Uncollectible 2.00% 305,000 55,000 4.00% Age Interval Not past due 1-30 days past due 31-60 days past due 61-90 days past due 91-180 days past due Total 18,000 20.00% 40.00% 14,000 6,000 398,000 90.00% The net realizable value of Swenson's 12/31/07 receivables was: Before adjustment, the 12/31/07 balance in Swenson's Allowance for Doubtful Accounts was a $3,100 credit. Swenson's fiscal 2007 bad debt expense was