Which best describes the equilibrium price in the relationship between supply and demand? a. andre told us, "demand is highest when there are more widgets to sell; if you don't have widgets, how can people buy them? " b. hank said, "we can charge whatever the market will bear." c. shauna told her employees, "the company is only sending one fuel truck per week now, so the price is going up. it's like they're rationing us." d. dave said, "man, there are so many laptops out there they don't know what to do with them! they're a dime a dozen now."?

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.