(63 POINTS) please answer because i really need help marking brainlest to whoever gets it correct and answers fast!! Use the proof diagram to complete the question. State the missing reason in this proof for the letter given.

Einstein office equipment has a rental plan for office machines. a fax machine that lists for $722.98 can be rented for 22% of the price annually. the state imposes a usage charge of 3.2%. if stephen hawking travel decides to rent the fax machine, what will its total monthly rental charge be?