Do rational expressions contain exponential functions

One positive number is 9 more than twice another. if their product is 95, find the numbers

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

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)