Mark and his three friends ate out seat applebees. their bill totaled $52.35. if they left the server a 20% tip, how much would each person pay splitting the bill evenly?

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.