P54A Pearl E. White Orthodontist specializes in correcting misaligned teeth. During 2021, Pearl provides services on account of $590,000. Of this amount, $80,000 remains receivable at the end of the year. An aging schedule as of December 31, 2021, is provided below. Age Group Amount Receivable Estimated Percent Uncollectible Not yet due $40,000 4% 0-90 days past due 16,000 20% 91-180 days past due 11,000 25% More than 180 days past due 13,000 80% Total $80,000 Required: 1. Calculate the allowance for uncollectible accounts. 2. Record the December 31, 2021, adjustment, assuming the balance of Allowance for Uncollectible Accounts before adjustment is $5,000 (credit). 3. On July 19, 2022, a customer's account balance of $8,000 is written off as uncollectible. Record the write-off. 4. On September 30, 2022, the customer whose account was written off in requirement 3 unexpectedly pays the full amount. Record the cash collection