There are 25 bikes and trikes at the park. The bikes and trikes have 60 wheels in all. In the graph, the reddots show sums of 25. The blue dots show 60-wheel combinations. How many bikes and trikes are in the park? Explain.

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.