Evaluate above. can someone tell me the answer and how to do it?

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

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done

Y+ 2/y is it a polynomial in one variable or not? and if so, why?