The concept that it is very difficult to consistently pick winners in the stock market without inside information is known as:
a. a random walk

Colin spends his income of $100 per week on two goods: pizzas (which cost $8 each) and milk (which costs $1 per gallon)

At his current level of consumption, the marginal utility from the last pizza consumed is 32 and the marginal utility from the last gallon of milk is 4 . Is Colin maximizing his utility? Why or why not? If not, what should Colin do to achieve a higher level of utility?

The NFL Ticket Exchange is an attempt by the NFL

A. to extend its monopoly in the primary ticket market to the secondary market. B. to capture profits made in the secondary market. C. to appear to charge lower ticket prices while effectively charging higher prices. D. all of these.