Avan travels from town a to town b. it uses 1 gallon of gas for every 24 miles traveled. how many gallons of gas does the van use if it travels 3x miles?

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.