A development strategy of import substitution eliminates the gains from specialization and comparative advantage in production among countries

Based on the above table, which shows the firms and sales in an industry, what is the four-firm concentration ratio?

A) 55 B) 74 C) 100 D) $740 million

Online companies gather personal information about the customers who shop on their Web sites and some of those companies will use the data to estimate price elasticities of the customers

Doing this is a way that these companies might be able to charge a higher price for a product to those customers who have a ________ price elasticity of demand. A) low B) high C) negative D) unitary