What is the approximate average rate at which the air's resistance increases, as the car accelerates from 50 km/h50\text{ km/h}50 km/h50, start text, space, k, m, slash, h, end text to 65 km/h65\text{ km/h}65 km/h65, start text, space, k, m, slash, h, end text?

Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. 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.