I need help answerinh the following questions. I know the answers, but I don't know the steps to get the answer.

#1) On January 1, 2014, the Accounts Receivable and the Allowance for Uncollectible Accounts for Darius Company carried balances of $20,000 and $550 respectively. During the year, the company reported $70,000 of credit sales. There were $400 of receivables written off as uncollectible in 2014. Cash collections of receivables amounted to $74,700. The company estimates that it will be unable to collect 5% of the year-end accounts receivable balance.

Part 1) The amount of bad debts expense recognized in the 2014 income statement will be: A. $545 *B. $595 C. $745 D. $795

Part 2) The net realizable value of receivables appearing on the 2014 balance sheet will amount to:

A. $14,105 *B. $14,155 C. $14,900 D. $15,450