1. True or false: Current saving rises as current wages and wealth rise but current saving falls as future wages rise. Please explain your answer

2. True or false: Saving and investment react in the same way to an increase in the interest rate. Please explain your answer

3. True or false: Doubling the supply of money doubles the price level. Please explain your answer

4. Please list and briefly explain four ways in which a typical central bank (e.g., the U.S. Federal Reserve) can increase he money supply. Please restrict your answer