Walton Manufacturing Company began operations on January 1. During the year, it started and completed 1,620 units of product. The financial statements are prepared in accordance with GAAP. The company incurred the following costs:

The following information is needed to reconcile the cash balance for gourmet catering services.* a deposit of $5,600 is in transit.* outstanding checks total $1,000.* the book balance is $6,400 at february 28, 2019.* the bookkeeper recorded a $1,800 check as $17,200 in payment of the current month's rent.* the bank balance at february 28, 2019 was $17,410.* a deposit of $400 was credited by the bank for $4,000.* a customer's check for $3,300 was returned for nonsufficient funds.* the bank service charge is $90.what was the adjusted book balance?