(Complex annuity) Upon graduating from college 35 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 7.1% interest compounded weekly. a. How much has Nick accumulated in his retirement account? b. In addition to all this, 20 years ago, Nick received an inheritance check for $30 comma 000 from his beloved uncle. He decided to deposit the entire amount into his retirement fund. What is his current balance in the fund?