Delicious delights bakery has a liberal credit policy and has been experiencing a high rate of uncollectible accounts .the company estimates that 9% of credit sales become bad credit .due to the significance of this amount , the company uses the allowance method for accounting for bad debts .during the year , credit sales,amounted to 270,000.the yeaar end account recievable balance 126,000 what was the bad debts expense for the year? Select the formula to calculate debt expense?