3. Leslie Mosallam, who recently sold her Porsche, placed $10,000 in a savings account paying annual compound interest of 6 percent. Calculate: a. The amount of money that will accumulate if Leslie leaves the money in the bank for 1,5 and 15 years. b. Suppose Leslie moves her money into an account that pays 8 percent or one that pays 10 percent. Rework part (a) using 8 percent and 10 percent. c. What conclusions can you draw about the relationship between interest rates, time and future sums form the calculations you just did? 4. Upon graduating from college 35 years ago, Dr Nick Riviera was already planning for his retirement. Since then, he has made $300 deposits into a retirement fund on a quarterly basis. Nick has just completed his final payment and is at last ready to retire. His retirement fund has earned 9 percent compounded quarterly. a. How much has Nick accumulated in his retirement account? b. In addition to this, 15 years ago Nick received check for $20,000 from his beloved uncle. He decided to deposit the entire amount into his retirement fund. What is his current balance in the fund