8. Second National Bank offers an account that earns interest at an annual rate of 7.1%, com- pounded continuously. You take advantage of this great interest rate and deposit money into this account. Your account grows to $4850.45 in three years. (a) How much did you initially deposit into this account? (Round your answer to the nearest cent.) (b) Suppose you want to go on a trip in three years and you need your deposit to grow to $6000, instead of $4850.45. If you can only afford to deposit $4000 in the account today, what interest rate do you need the bank to offer instead, so that you to have the $6000 in three years? (Round your answer to two decimal places, after writing your answer as a percentage.)

#2 amount is 120,448

What is the simple interest rate on a $1600 investment paying $580.32 interest in 11.7 years? % (round to the nearest tenth of a percent)