During 2018, Jacobsen wrote off $18,000 in receivables and recovered $6,000 that had been written off in prior years. Jacobsen's December 31, 2017, allowance for doutbful accounts was $40,000. What is the appropriate year-end adjusting entry Jacobson must use to record bad debts expense and update the allowance for doubtful accounts on December 31, 2018