A highway sign in Canada gives the speed limit as 100 kilometers per hour. If you are driving 62 miles per hour are you driving under the speed limit? (1mi=1.6km)

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.