Starting at noon, the temperature changed steadily at a rate of -0.8°C every hour. At 3 p. m., the temperature was -2.5 °C.
What was the temperature at noon?

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.