Which expression is equivalent to 3.6×107/(2.5×106)(1.6×103) ? A. 9.0×10−15
B. 9.0×10−10
C. 9.0×10−3
D. 9.0×10−1

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.