It is difficult in a natural monopoly market for the firm to achieve both efficiency and zero economic profit simultaneously, even with regulation

Another commonly used algebraic form for a demand function is the semi-logarithmic functional form, log(Q) = a - bP + cI, where Q is quantity demanded, P is the product price, and I is income

Here, -100b represents the percentage change in quantity demanded given a one unit increase in price. By the Law of Demand, we should expect the value of b to be: A) positive. B) negative. C) positive or negative. D) We do not have enough information to answer this question.

Historically, which of the following has had the highest average annual rate of return?

a. corporate bonds b. money market mutual funds c. corporate stocks d. U.S. Treasury bonds