Find Y please I need it for an exam to graduate

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.

52 cm radius = diameter = area = circumference = circumfer

Collin did the work to see if 10 is a solution to the equation r/4=2.4