i am having great trouble with the following question

Prepare all journal entries to record each of the transactions that occurred in 2015-16 and the journal entry to record bad debt expense at 30 June 2016, assuming that 7 per cent of accounts receivable at 30 June are uncollectible 19 Comparing methods for uncollectible receivables LO2, 3 The following data pertains to the operations of Knight Corporation for 2016 Net credit sales Net income (before bad debt expense $725000 35000 7 500 396 Write-offs of uncollectible accounts Estimated uncollectible percentage of net credit sales Chapter Six \ Receivables