Marvin Davis received an inheritance from his great-grandmother.At the reading of the will, the attorney revealed that he had three options for receiving his inheritance:

1. $350,000 cash instantly
2. $200,000 cash immediately, along with a six-period annuity of $30,000 starting one year from today
3. A six-period annuity of $100,000 starting one year from today. The interest rate is 10%.

I cant figure the right formula, i have came with different answers to find number 2 and 3 question. can you tell me what the correct formula is.