Plz fill in the is the greatest of common factors of the two or more numbers.

Which rational number could be graphed between -4 and -5

Need showing work for this problem 56.25 ×25.80

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