Asphere has a radius of 6 inches and a surface area of 144π in2. the radius of the sphere will be doubled. how will this effect the surface area of the sphere?

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.