What is the current interest rate for Series I Savings Bonds? What is the minimum purchase amount and maximum annual purchase amount for these bonds? How long must you hold these bonds? What happens if you redeem the bond in less than five years? What if you redeem the bond after 5 years? If you purchased a Series I Savings Bonds (any dollar amount) at the current interest rate and continually reinvested the principal plus interest, approximately how long would it take for you to double your initial investment amount (use the Rule of 70, and show your work)? Do you think Series I Savings Bonds are a good investment? Would you invest in them? Why or why not