Suppose there are 100 consumers with identical individual demand curves. When the price of a movie ticket is $8, the quantity demanded for each person is 5 . When the price is $4, the quantity demanded for each person is 9 . Assuming the law of demand holds, which of the following choices is the most likely quantity demanded in the market when the price is $6?

Tomas increased his consumption of potato chips when the price of pistachios increased. For Tomas, potato chips and pistachios are

A) both luxury goods. B) substitutes in consumption. C) both inferior goods. D) complements in consumption.

In economics, the term for a person who reduces transaction costs by arranging trades for buyers and sellers is

a. an exchange broker. b. a middleman. c. a transactions specialist. d. an opportunity finder.