6 of 7 (0 complete) For the following amount at the given interest rate compounded continuously, find (a) the future vale after years, by the effective rate, and (c) the time to reach $15,000 $5900 at 39% a. The future value after 7 years is approximately $ (Do not round until the final answer. The round to the nearest cent as needed) b. The effective rate is ex (Do not found until the final answer. Then found to two decimal places as needed) c. The time to reach $15.000 from $5900 at 3.9% is years. (Do not found until the final answer. Then round to two decimal places as needed)