A business has the following balances at the beginning of the year: Accounts receivable: 55000 Allowance for doubtful accounts: -8250 The following summary transactions occurred during the year. Sales for the year, 100% on credit: 90000 Cash collected on accounts receivable for the year: 94200 Write-offs of uncollectable accounts receivable: 6600 Received a cheque from a customer whose account was previously written off: 660 Overall rate used to estimate the allowance for doubtful accounts at year end: 12% Using the information above, answer the following questions. Enter the digits only - no dollar signs, commas, or decimal points. IMPORTANT - enter your answer to the second question (the balance in the allowance) as a NEGATIVE number, with a minus sign (-) in front of the digits. What is the balance in the accounts receivable account at year end? What is the balance in the allowance for doubtful accounts at year end? What is the balance in the bad debt expense account at year end?