Allowance for Doubtful Accounts has a debit balance of $800 at the end of the year (before adjustment), and bad debt expense is estimated at 3% of credit sales. If credit sales are $556,000, the amount of the adjusting entry to record the estimate of the uncollectible accounts

Asupermarket has been experiencing long lines during peak periods of the day. the problem is noticeably worse on certain days of the week, and the peak periods are sometimes different according to the day of the week. there are usually enough workers on the job to open all cash registers. the problem is knowing when to call some of the workers stocking shelves up to the front to work the checkout counters. how might decision models the supermarket? what data would be needed to develop these models?