In the table at? right, how many workers are employed when marginal product reaches its? maximum?

Your neighbor likes to blast 1970's rock music and the louder the better. The loud music imposes a cost on you because it disrupts your study of economics. Let D stand for the volume of his music in decibels, B for his benefits and C for your costs, where B and C are measured in dollars. For any given volume, D, your neighbor's benefit is B = 0.63D - 0.002D2 and your cost is C = 0.06D + 0.001D2. With an efficient Pigouvian tax, how much will your neighbor pay in noise taxes?

A. $22.50 B. $23.75 C. $28.75 D. $71.25

Refer to the above figure. The figure represents the market demand and supply curves for widgets in a perfectly competitive market. What statement can be made about the demand curve for an individual firm in this market?

A. An individual firm's demand curve will be a smaller version of the market demand curve. B. An individual firm's demand curve will be horizontal at $5. C. An individual firm's demand curve will be horizontal at a price below $5. D. An individual firm's demand curve cannot be determined from the graph above.

In cities with rent controls, the actual rents paid can be ________ than the legal maximum. One explanation for this is because there is a ________ of apartments, tenants are ________

A) higher; shortage; often willing to pay rents higher than the law allows B) higher; surplus; often forced to pay rents higher than the law allows C) lower; surplus; never willing to pay rents below the legal maximum D) lower; shortage; rarely willing to pay rents lower than the law allows

All of the following are reasons for an oligopoly to occur EXCEPT

A. independence among firms. B. merger. C. barriers to entry. D. economies to scale.