At the beginning of the year; the company's allowance for uncollectible accounts had a beginning balance of $8,000. On January 22nd, the company wrote off the A/R from customer C for $500 21. \$_By the end of the year (December 31st ); total accounts written off were $7,800 (including the write off for customer C). What is the balance in the allowance for uncollectible accounts after all the write-offs? 22. How much did bad debt expense change when the company wrote off the accounts receivables