Qiang places the amount of $28 in a special bank account that guarantees to provide $186 in 10 years. What rate of return would Qiang earn on this opportunity? r = ____ % Your answer should be in PERCENTAGE form with 2 decimal places. That is, enter your response as say 3.75 and NOT as .0375. Also, do not use a percent sign in your answer. You should work your analysis using at least four decimal places of accuracy.