This document discusses market structures and price determination. It defines a market as a place where buyers and sellers meet to exchange goods and services. Key components of a market include goods/services, buyers, sellers, and interactions between them. Markets can be classified based on factors like competition, time period, location, and degree of government intervention. Perfect competition and monopolistic competition are examples of different market structures. Price determination results from the interaction of supply and demand in a market. The equilibrium price is where quantity supplied equals quantity demanded. Changes in supply and demand can shift the equilibrium price.