Filler-up is an accrual-basis calendar-year c corporation. filler-up uses an allowance method for accounting for bad debts. the allowance for bad debts was $20,000 at the beginning of the year and $30,000 at the end of the year. during the year, filler-up wrote off $5,000 of uncollectible receivables and accrued an additional $15,000 of expenses for accounts estimated to be uncollectible. what is the schedule m-1 adjustment on filler-up's federal income tax return?

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?