You invest a total of $20,000 in two accounts paying 12% and 11 % annual interest, respectively. How much was invested in each account if, after one year, the total interest was $2,255.00.

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.