Recently in the united states, there were about 300,000,000 cell phone users. that same year there were about 5.7x10^9 cell phone users worldwide. about how many times larger was the number of cell phone users world wide than in the united states?
provide steps.

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