Answer: A free market economy system is a system where all prices and goods are determined by the people and businesses with no interference from the government. Examples include Singapore, Hong Kong, Australia, etc.
A command economy is where the economy is completely controlled by the government and all prices and goods are set and regulated by them. Examples include North Korea and Cuba.
A mixed economy is a combination of both where prices and goods are determined by the people and businesses; however certain goods have their prices personally regulated by the government. Examples include United States, United Kingdom, France, India, etc.