In which direction must the graph of f(x) = x be shifted to produce the graph of g(x) = f(x) - 4? a. up b. down c. right and up d. left and down

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.