(Complex annuity) Upon graduating from college 30 years ago, Dr. Nick Riviera was already thinking of retirement. Since then, he has made deposits into his retirement fund on a basis in the amount of $140. Nick has just completed his final payment and is at last ready to retire. His retirement fund has earned 11.5% interest compounded monthly.

a. Since graduating from college 30 years ago, Dr. Nick Riviera has made deposits into his retirement fund on a basis in the amount of $140. If his retirement fund has earned 11.5% interest compounded , how much has Nick accumulated in his retirement account?

b. In addition to all this,15 years ago, Nick received 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?

arned 11.5% interest compounded monthly. . How much has Nick accumulated in his retirement account? (Round to the nearest cent.)