At the end of the current year, Accounts Receivable has a balance of $1,450,000; Allowance for Doubtful Accounts has a credit balance of $4,200; and sales for the year total $7,462,000. Bad debt expense is estimated at 1/4 of 1% of net sales. Determine (a) the adjusting journal entry for bad debt expense; (b) the adjusted balance of Allowance for Doubtful Accounts; and (c) the net realizable value of accounts receivable