Will someone be my friend

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

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Match each function with its rate of growth or decay