Which is the BEST estimate of the average rate of change for the function graphed, over the interval 1 sxs 3? es)
A)
-2
B)
-3
D)
-6

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.