A local bank is running the following advertisement in the newapaper. "For just $3,000 we will pay you $210 forevert" The fine print in the ad says that for a $3,000 deposi, the bank will pay $210 every year in porpetuty, starting one year afer the deposit is made. What interest rate is the bank advertising (what is the rate of retum of this investrent)? The interest rate the bank is advertising is \%. (Round to the nestest integet)