Quick Buck and Pushy Sales produce and sell identical products and face zero marginal and average cost. Below is the market demand curve for their product. Suppose Quick Buck and Pushy Sales decide to collude and work together as a monopolist with each firm producing half the quantity demanded by the market at the monopoly price. If Quick Buck cheats by reducing its price to $1 while Pushy Sales continues to comply with the collusive agreement, then Quick Buck's economic profit will be ________.

After the September 11th attack on the World Trade Center, and with the emergence of the anthrax scare, the price and the purchases of gas masks jumped dramatically in New York City. In the economic way of thinking, which of the following occurred?

A) The supply curve for gas masks shifted to the right. B) The supply curve for gas masks shifted to the left. C) The demand curve for gas masks shifted to the right. D) The demand curve for gas masks shifted to the left. E) The demand curve for gas masks became upward-sloping.

Carlos uses a company's blog to announce new merchandise, get feedback from customers, and allow customers to share information about his products. His frequent customers use his his blog on a regular basis to keep up with what is happening with the company's products and to share product preferences. This is called