You receive a $3,000 check from your grandparents for graduation. You decide to save it toward a down payment on a house. You invest it earning 11% per year and you think you will need to have $6,000 saved for the down payment. How long will it be before the $3,000 has grown to $6,000 ? To double the money you received from your grandparents, it will take years. (Round to one decimal place.) A local bank is running the following advertisement in the newspaper: "For just $2,000 we will pay you $200 forever!" The fine print in the ad says that for a $2,000 deposit, the bank will pay $200 every year in perpetuity, starting one year after the deposit is made. What interest rate is the bank advertising (what is the rate of return of this investment)? The interest rate the bank is advertising is \%. (Round to the nearest integer.)