company A rents copy machines for $200 a month plus $0.06 per copy. Company B charges $400 a month plus $0.02 per copy. for which number of copies do the two companies charge the same amount

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