What is the multiplicative rate of change of the function 1 3/2

In the diagram of circle a what is m

Write the standard form of an equation with (see picture below)

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