Compute the interest rate if future value (FV) = $7,870, present value (FV) = $3,357, and number of years (t) = 7. (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.):

Imprudential, Inc., has an unfunded pension liability of $418 million that must be paid in 23 years. To assess the value of the firms stock, financial analysts want to discount this liability back to the present. If the relevant discount rate is 7.1 percent, what is the present value of this liability? (Do not round intermediate calculations and enter your answer in dollars, not millions, rounded to 2 decimal places, e.g., 1,234,567.89)

Youre trying to save to buy a new $249,000 Ferrari. You have $50,000 today that can be invested at your bank. The bank pays 7.7 percent annual interest on its accounts. How long will it be before you have enough to buy the car? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.