The position of a diving bell is −3/4 mile relative to sea level. the diving bell reached this position after dropping from sea level at a constant rate for 1 1/2 hours. what was the position of the diving bell relative to sea level 1 hour after it began its descent?

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