Amicrowave is placed on top of two boxes. one box is 4 feet 2 inches tall, the other box is 3 feet 5 inches tall, and the microwave is 2feet 7 inches tall. how tall are they combined?

Barrett is comparing the membership fees for two museums.the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?