4 pts Question 22 Melvin deposited $8,000 in an interest-bearing savings account and after 10 years, Melvin closes out the account, which is worth at that time $ 16,000. Assuming Melvin made no other deposits into the savings account during this 10-year period other than the initial amount of $8,000, what annual rate of interest did he earn over the 10 years? Note: Carry your final answer out two decimal places