Please show all work and if possible, EXPLAIN, your answer. Explain #4 please.

Exam Pre-Test Practice: 1. If a company purchases merchandise on terms of 2/10, n 30, the cash discount available (assuming a 360- day year is equivalent to an effective annual interest rate of a. 2 b.. 24% c. 36 d. 60% 17.88] 2. During the year, Kiner Company made an entry to write off a $32,000 uncollectible account. Before this entry was made, the balance in accounts receivable was $400,000 and the balance in the allowance account was $36,000. The net realizable value of accounts receivable after the write-off entry Was a. $400,000. b. $396,000. c. $332,000. d. $364,000 [7.102] 3. Vasguez Corporation had a 1/1/17 balance in the Allowance for Doubtful Accounts of $40,000. During 2017, it wrote off S28,800 of accounts and collected $8,400 on accounts previously written off The balance in Accounts Receivable was $800,000 at 1/1 and $960,000 at 12/31. At 12/31/17, Vasguez estimates that 5% of accounts receivable will prove to be uncollectible. What is Bad Debt Expense for 2017? a. $8,000 b. $28,400. c. $36,800 d. $48,000. 17.110]