Roberta deposited 4,790.23 into a saving account with an interest rate of 3.8% compunded twice a year. about how long will it takefor the account to be worth 9,000?

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.