You have $40 in your wallet but you do not want to spend all of it. You want to have at least some money left you find a shirt for $5 and buy it which the amount of money (m) you have left to spend ?

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters