Which expression is equal to (look at pic)

3. solve by graphing: y = 2x + 6 x + y = -3

What is a rational number between 9.5 and 9.7

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.