Acomputer can perform 30 identical tasks in six hours. at that rate, what is the minimum number of computers that should be assigned to complete 80 of the tasks within 3 hours?

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.