7. Application Health care expenditures in the United States exceeded $1 trillion in the mid-1990s and exceeded $2 trillion in 2005. Many elderly and disabled persons rely on Medicare benefits to help cover health care costs. According to the Centers for Medicare and Medicaid 2005 Annual Report, Medicare expenditures were $7.1 billion in 1970. a. Assume Medicare spending has increased by 11.7% per year since 1970. Write a recursive rule to generate the sequence of increasing Medicare spending.