help me that exxercise. thank you

The following represents selected information taken from a company's ageing schedule to estimate uncollectible accounts receivable at vear-end. Instructions (a) Calculate the total estimated bad debts based on the above information. (b) Prepare the year-end adjusting journal entry to record the bad debts using the allowance method and the aged uncollectible accounts receivable determined in (a). Assume the current balance in Allowance for Doubtful Accounts is a $3,000 credit. (c) Of the above accounts, $1,600 is determined to be specifically uncollectible. Prepare the journal entry to write off the uncollectible accounts. (d) The company subsequently collects $700 on a specific account that had previously been determined to be uncollectible in (c). Prepare the journal entry(ies) necessary to restore the account and record the cash collection