Dynamic, Incorporated had credit sales of $670,000 for March. Accounts receivable of $8,500 were determined to be worthless and were written off during March. Accounts receivable total $521,000 at March 31. Management feels that based on past experience, approximately 2% of net credit sales will prove to be uncollectible. Assuming Dynamic, Incorporated uses the income statement approach (an allowance method) to account for uncollectible accounts, impairment loss for March is: