i need the answer quickly

on Jan 1 businuess A had an allowancw for doubtful acounts of $4,000 for the current year, the following events affected the allowance for doubtful acounts during the year. june 15. Jakes acount recievsble of 2700 was deemed uncolectible July 1. John paid the full amount of a previously written off acount recievable. this recievable of 1300 had been written of in the prior year dec 31. bad debts expense of $4,500 was recorded What amount should apear for the allowance for doubtful acounts ij the december 31, balance sheat of the current year