I don’t understand how do you do this I have a assignment for tommorow some one help

Kevin has just finished paying off his loan. he was assessed a service charge of $422. he paid off the principal and the interest by making weekly payments of $36.13 for four years. if the principal was $7,150, how much did kevin pay in finance charges, to the nearest dollar? a. $498 b. $365 c. $422 d. $787

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Which table shows a proportional relationship between miles traveled and gas used?