Please help me solve this problem.

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

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

What is the distance between points a and b?