Clare lives in iowa and pays 6% in sales tax. she just bought $135 in groceries, but $40 worth of those groceries were not taxable. what is the total amount that clare paid for groceries, including sales tax?

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.