I need help please (Exponential Functions)

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

If the tip varies directly with the number of guest which equation represents between the tip, t, and the number of guest, g?

Afair survey question is one that does not encourage biased responses. which survey question is fair? a.) do you agree that only unethical people take credit for other people’s work? b.) have you ever taken credit for somebody else’s work? c.) have you ever engaged in unethical behavior, such as taking credit for somebody else’s work? d.) don’t you think it is unethical to take credit for somebody else’s work?