Help please I have a F

If f(x)= 3x+6 which of the following is the inverse of f(x)

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. 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.