Economists' estimates of price elasticities can differ somewhat, depending on the time period and on the markets in which the price and quantity data used in the estimates were gathered. An article in the New York Times contained the following statement from the Centers for Disease Control and Prevention: "A 10 percent increase in the price of cigarettes reduces consumption by 3 to 5 percent." Given this information, compute the range of price elasticity of demand for cigarettes. Source: Shaila Dewan, "States Look at Tobacco to Balance the Budget," New York Times, March 20, 2009. According to the article, the price elasticity of demand for cigarettes ranges from nothing (the lowest end of the range in absolute value) to nothing. (Enter your responses as real numbers rounded to two decimal places.) Explain whether the demand for cigarettes is elastic, inelastic, or unit elastic.

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.