Don’t know why this app is making me write a question

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.

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

Write a similarity statement for the similar triangles. afgh ~ a