To calculate the approximate number of years required to double real GDP which one can be used? Select one: O a. Rule of 70 O b. Double Rule O c. Number 70 O d. Rule of 20 Much of the framework of modern macroeconomics comes from the works of Select one: O a. Adam Smith O b. Walter Heller O c. None of the Given O d. John Maynard Keynes Cash payments made by the Government to people who do not supply goods, services, or labor in exchange for these payments. Select one: O a. Transfer Payments O b. Commission O c. Loan Payments O d. Wages The ratio of number of people unemployed to the total number of people in the labor force is Select one: a. Population Rate O b. Employment Rate c. Labor force Participation Rate O d. Unemployment Rate