Can someone please help me ?!

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

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?