HELP ASAPPP DUE IN A COUPLE MINUTES. WILL GIVE BRAINIEST! can someone do these 3 questions for me please !!

(PLEASE HELP WITH 7,8,9)

*please don't put none related answers to get points !! *​

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

The surface area of the triangular prism is .

Pls yall i really need the answer fr fr