What do we mean when we say "Medicaid is 5 programs in 1"? What are the multiple roles of Medicaid in the health care system of United States? List the roles and describe them briey. Thinking about pharmaceutical prices, do high research and development costs for drugs cause high prices? What about the converse - does the ability to charge high prices motivate high research and development costs? Discuss in a short paragraph. Thinking about pharmaceutical prices, do high research and development costs for drugs cause high prices? What about the converse - does the ability to charge high prices motivate high research and development costs? Discuss in a short paragraph