Geometry- Circles Part 1 Test- Summative. PLEASE HELP!!!

Which graph represents the following piecewise defined function?

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

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.