When Mrs. Campece bakes chocolate chip cookies, she need 2 cups of flour for every 1.5 cups of chocolate chips. If she's making a big batch and uses 6 cups
of flour, how many chocolate chips does she need?

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.