Why is a long-run supply curve is flatter than a short-run supply curve?
a. firms can enter and exit a market more easily in the long run than in the short run.
b. long-run supply curves are sometimes downward sloping.
c. competitive firms have more control over demand in the long run.
d. firms in a competitive market face identical cost structures.

If a hotel has 100 rooms, and each room takes 25 minutes to clean, how many housekeepers working 8-hour shifts does the hotel need at 50 percent occupancy?

Which of the following is a function performed by market prices? a. market prices communicate information to buyers and sellers. b. market prices coordinate the decisions of buyers and sellers. c. market prices motivate entrepreneurs to produce those products that are currently most desired relative to their costs of production. d. all of the above are functions performed by market prices.

Scientists developed the first successful human cell culture in vitro (grown in a lab) in the 1950s by removing cancer cells from a woman. this concept has allowed modern scientists to successfully grow organs. which of the following answers  bestdetermines why there was success?   neurons send a signal to the cell to multiply.a large blood supply to the cell allows enough nutrients for growth.cells are the basic unit of life and thus can regenerate if in a controlled environment.cells cannot reproduce on their own, and the scientist manipulates them to grow.