Finance question, please show work if you can. Thank you!

16. Calculating Rates of Return. [LO3] Refer back to the Series EE savings bonds we discussed at the very beginning of the chapter. a. Assuming you purchased a $50 face value bond, what is the exact rate of return you would earn if you held the bond for 20 years until it doubled in value? b. If you purchased a $50 face value bond in early 2014 at the then current interest rate of . 10 percent per year, how much would the bond be worth in 2024 ? c. In 2024 , instead of cashing the bond in for its then current value, you decide to hold the bond until it doubles in face value in 2034 . What rate of return will you earn over the last 10 years