10. Explain whether, and why, the following statement is true or false: "When there is a change in price of good X, there is ALWAYS a change in quantity demanded, but NOT ALWAYS in quantity supplied, as the latter (quantity supplied) will depend on the elasticity (change in QDx after a change in Px)" 11. Explain what does it mean constant prices, and why we use them to calculate real GDP. 12. Explain whether the following statement is true or false and detailed why: "Fiscal Policy is designed and executed by the ministry of finance, and it is related to government expenditures, money supply and taxes" 13. Explain whether the following statement is true or false and detailed why: "Monetary Policy is designed and executed by the monetary authority, and it is related to quantity of money and exchange rate" 14. Explain all the ways in which the government can execute a contractionary fiscal policy causes a movement demand curve and typically some change cancels out any changes in level between years. 15. Explain why the following statement is true or false: "A labor market with many rigidities (like strong unions and minimum salary) typically suffers both frictional and structural unemployment" 17. Explain why the following statement is true or false: "The difference of nature between financial markets and financial intermediaries is the following: Financial markets are independent from the financial system, but intermediaries are dependent of the financial system" 18. Explain why the following statement is true or false: "In macroeconomic analysis, investment (I) mostly depends on the interest rate