An isocost line shows:
a. all the possible output levels that can be produced at a given total cost.
b. all the input combinations that produce the same total output.
c. all the input combinations that can be purchased at a given total cost.
d. the total cost of producing each possible level of output.

Who is better at multi-tasking? in business, employees are often asked to perform a complex task when their atten-tion is divided (i.e., multi-tasking). human factors (may 2014) published a study designed to determine whether video game players are better than non–video game play-ers at multi-tasking. each in a sample of 60 college stu-dents was classified as a video game player or a non-player. participants entered a street crossing simulator and were asked to cross a busy street at an unsigned intersec-tion. the simulator was designed to have cars traveling at various high rates of speed in both directions. during the crossing, the students also performed a memory task as a distraction. two variables were measured for each student: (1) a street crossing performance score (measured out of 100 points) and (2) a memory task score (measured out of 20 points). the researchers found no differences in either the street crossing performance or memory task score of video game players and non-gamers. “these results,” say the researchers, “suggest that action video game players [and non-gamers] are equally susceptible to the costs of dividing attention in a complex task”

Martha is one producer in the perfectly competitive jelly industry. last year, martha and all of her competitors found themselves earning economic profits. if there is free entry and exit, what do you expect to happen to the number of suppliers in the industry and the price of jelly? the number of suppliers will increase, and the price of jelly will fall. the number of suppliers will decrease, and the price of jelly will increase. the number of suppliers will increase, and the price of jelly will increase. the number of suppliers will decrease, and the price of jelly will fall.

Which of the following statements is correct? a major disadvantage of a partnership relative to a corporation is the fact that federal income taxes must be paid by the partners rather than by the firm itself. in a typical partnership, liability for other partners’ misdeeds is limited to the amount of a particular partner’s investment in the business.true in a limited partnership, the limited partners have voting control, while the general partner has operating control over the business, and the limited partners are individually responsible, on a pro rata basis, for the firm’s debts in the event of bankruptcy. partnerships have more difficulty attracting large amounts of capital than corporations because of such factors as unlimited liability, the need to reorganize when a partner dies, and the illiquidity of partnership interests.