Zeke drove 143miles in 3 hours. What is his average rate of speed (m please help i need to get a good grade but i’m stuck

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