deshawn's detailing is a service that details cars at the customers' homes or places of work. deshawn's cost for a basic detailing package is $40, and he charges $75 for this service. for a total price of $90, deshawn will also detail the car's engine, a service that adds an additional $20 to the total cost of the package. what is the marginal cost of adding the engine detailing to the basic detailing package?

What is the most important type of decision that the financial manager makes?

After testing its water, a city water department issues a report to the related citizens, noting what chemicals have been identified, their doses, and the estimated risks of exposure at these levels. this report represents a type of

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?