So to answer this question first you have to find out how much interest was earned by Joanie's 1000$ so that would be the number of dollars earned-A divided by the years that it took to earn that much- B so the ending equation would be A ÷ B= C with C being the number of dollars per year. and that would be 35 dollars per year. So, now all we need to do is find out the percentage 35$ is of 1000$ which would be 3.5% Hope I Helped!
