Narwhal Noise Systems manufactures audio and visual systems for installation at conference centers and small businesses across the Pacific Northwest. Narwhal's sales are only on credit. Narwhal's lead accountant provided the following Sales and Accounts Receivable data for the year-ended December 31 : Show your work (calculations), if possible, to potentially receive partial credit. 1. Determine the balance of Accounts Receivable at December 31 . 2. Assume Narwhal Noise Systems estimates bad debts based on the aging method. Estimate the ending balance in the Allowance for Doubtful Accounts at December 31 using the information below: 3. Continue to assume Narwhal Noise Systems estimates bad debts based on the aging method, what journal entry would Narwhal prepare to record bad debt expense for the year? 4. What is the net realizable value of the receivables to be reported on Narwhal's Balance Sheet at December 31 if we continue to assume Narwhal is using the aging method? 5. Instead now assume Narwhal Noise Systems estimates bad debts at 6% of credit sales. What amount would the company record as bad debt expense at December 31 ? 6. Continuing to assume that Narwhal now estimates bad debts based on 6% of credit sales, what journal entry would Narwhal prepare to record bad debt expense for the year