The reason why people are charged for an additional can of soda they get from a soda machine, but are not charged for an additional paper taken from a newspaper dispensing machine, is that the marginal utility of an additional:

Employees at a library check out books to patrons. books have an isbn and a name. the library sometimes has multiple copies of the same book. books have one or more authors. a patron is an individual who has an active (non-expired) library card. for each library card, we store the person's first and last names and their address. for each employee, we store their employee id, current salary, first and last name and their address. we also store the employee id of their current manager. each time we check out a book to a patron we need to store the date of the transaction, the employee who checked out the book to the patron, and the library card of the patron. some employees have library cards. if an employee patron turns in a book late, the fine that they pay is a percentage of their salary. some employees are authors who have library cards—they are allowed to check out as many books as they like.

Use the information below to answer the following question. the boxwood company sells blankets for $60 each. the following was taken from the inventory records during may. the company had no beginning inventory on may 1. date blankets units cost may 3 purchase 5 $20 10 sale 3 17 purchase 10 $24 20 sale 6 23 sale 3 30 purchase 10 $30 assuming that the company uses the perpetual inventory system, determine the gross profit for the month of may using the lifo cost method.

Describe how to write a main idea expressed as a bottom-line statement