At January 1, 2019, Betty DeRose, Inc. had an allowance for bad debts with a $4,500 credit balance. During 2019, Betty wrote-off as uncollectible accounts receivable in the amount of $6,200. Betty prepared the following aging schedule at December 31, 2019: 

 Accounts Receivable % Uncollectible not past due $100,000 1% 1-30 days past due 50,000 3% 31-60 days past due 28,000 8% 61-90 days past due 17,000 25% over 90 days past due 10,000 40% 

Calculate the amount of bad debt expense recorded by Betty DeRose, Inc. for 2019. Do not use decimals in your answer.