A local bank is running the following advertisement in the? newspaper: "For just $5,000 we will pay you $500 ?forever!" The fine print in the ad says that for a $5,000 ?deposit, the bank will pay $500 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)? Round to nearest integer.