Problem:
In the following list the number of well-known companies and products that they sell. Which of the four (4) sorts of markets (perfect competition, monopolistic competition, monopoly, and oligopoly) best typifies the markets in which they compete? Describe why.
• MacDonald’s-hamburgers
• Exxon-Mobil-gasoline
• Dell-personal computers
• Heinz-ketchup
• Starbucks-gourmet coffee