Nathan usually drinks 32 ounces of water per day. He read that he should drink 56 ounces of water per day. If he starts drinking 56 ounces, what is the percent increase? Round to the nearest percent.

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.