4. Four years ago, you opened an account, and made deposits / savings three times (four years ago for $ 100, three years ago for $X. and one year ago for $ 200) for which you get various interest rates as shown in the chart below. If you currently earn $ 800. Count how many money that had to be saved three years ago? a. - $ 115.3 F $800 5% -3 -2 % 10% -1 + $200 0 $100 SX b. - $ 100,7 C. - $ 103.2 d. - $ 105.4 5. How much money should be saved now in the account if every year you want to be able to made a withdrawal of $ 8,000 at the end of each year for 5 years, if interest compound at 12% per annum. a. $ 28,839 b. $ 29,050 c. $ 30,761 d. $ 31,052 6. What is the value of that makes the value of these two cash flows equivalent to the compound interest rate 12 % per year? $100 $100 30 30 4 a $ 29,365 b. $ 33,598 $50 $50 C C 4 c. $ 47,433 2 0 1 2 3 4 d. $ 43,796