What are the medians in this drawing? Please!! ​

Alarge rectangle is divided into four smaller rectangles.

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily