1) If a person puts $3000 in an account and has 4000 in the account after 4 years what compound rate of interest was earned?

2) As a result of certain debt obligation a company must pay $15000 a year for the next 10 years. The next payment is due one year from now. The company wants to cancel this debt over the next 4 years. If the interest rate is 9% compounded annually, what is the payment for the next 4 years?