1. When you were ten years old,your grandparents put $150,000 into a bank account earning 7.75%. You can't withdraw the money until the balance has doubled. How long will you have to leave the money in the account (to the nearest whole year)?
2. a.9 years
3. b.11 years
4. c.15 years
5. d.12 years
6. e.8 years