Tim has a savings account with the bank. The bank pays him 2% per year. He has $5,500 and wonders when it will reach $5,700. When will the savings reach $5,700 if necessary, round your answer to the nearest whole number.

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.