hi i need some help. im not sure why my numbers are wrong and im getting frustrated with this qustion. i posted pictured with the numbers i keep getting and its says they are wrong.

Selected unadjusted account balances at December 31, 2020, are shown below for Demron Servicing Debit $61,800 Credit Account Accounts receivable Allowance for doubtful accounts Sales (all on credit) Sales discounts $ 960 419,000 5,000 Required: a. Demron estimates that 4% of net credit sales will prove to be uncollectible. Prepare the adjusting entry required on December 31, 2020, to estimate uncollectible receivables. No Answer is complete but not entirely correct. Date General Journal December 31, 202. Accounts receivable 16,500 Debit Credit 1 Sales 10.560 b. During 2021, credit sales were $541,000 (cost of sales $354.710); sales discounts of $9,000 were taken when accounts receivable of $329,900 were collected, and accounts written off during the year totalled $7,600. Prepare the entries for these transactions Answer is not complete. General Journal Na Debit Year 2021 Credit 1 . Accounts receivable Sales 541,000 541,000 2 2021 Sales discounts Accounts receivable 9,000 3 9.000 3 2021 Cash Accounts receivable 329.900 3 329,900 4 2021 Allowance for doubtful accounts Accounts receivable 7,600 7,600 > Return to questio c. Record the adjusting entry required on December 31, 2021 to estimate uncollectible receivables, assuming it is based on 4% of net credit sales No Answer is complete and correct. Date General Journal December 31, 204 Bad debt expense Allowance for doubtful accounts Credit 1 Debit 21,280 21.280 d. Show how accounts receivable would appear on the December 31, 2021, balance sheet Answer is complete but not entirely correct. Portal Balance sheet Assets Current Accounts receivable Alowance for do accounts $ 255,500 31 200 OS 224,300