use the compound intrest method 10-16

10. How much would need to be deposited into an account earning 4.7% interest compounded quarterly so that the balance will be $1,000,000 in 20 years? 11. Mary discovers a bank account her parents left for her that was opened when she was born 50 years ago. The statement she found says that they deposited $100 into the account which earned 1.8% compounded quarterly What is the balance of her account now? 12. In the same box, Mary discovers another statement for an account her grandparents opened for her when she was born. This statement shows a deposit amount of $100 into an account that pays 3.6% compounded