(Complex annuity) Upon graduating from college 40 years ago, Dr. Nick Riviera was already thinking of retirement. Since then, he has made deposits into his retirement fund on a weekly basis in the amount of $25. Nick has just completed his final payment and is at last ready to retire. His retirement fund has earned 11.7% interest compounded weekly a. How much has Nick accumulated in his retirement account? b. In addition to all this, 10 years ago, Nick recolved an inheritance 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