Answer the following questions based on what you have learned about the game of economics.

a. Define economics using the following terms: allocation, distribution, goods, resources, production, and services.
b. What is scarcity, and how does it affect supply and demand in the game of economics?
c. List the main differences between a free-market system, a command economy, and a mixed economy.
d. What type of economic system does the United States have? Explain.