At richardson manufacturing company, there are two factors that determine the cost of health care. if an employee makes less than $55,000 per year, he pays $40 per month for individual coverage and $85 per month for family coverage. if an employee makes at least $55,000 per year, individual coverage is $70 per month and family coverage is $165 per month.

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?