Establezca si el siguiente grafo es un función o no: (e,1) , (i,3) , (o,4) , (u,5). Justifique la respuesta

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.