On a restaurant sign, 14 light bulbs must be replaced. these light bulbs represent of the total number of light bulbs on the sign. if b represents the total number of light bulbs, which equation could be used to determine the value of b?

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.