Use rounding to estimate the product 12*9. then, use compensation to find the actual answer. if alison was rounding to find how much 12 books that were $9 apiece cost, would she get a good estimate? explain.

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.