I also really need help on this to

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

What is the inverse of the function f(x) = 2x + 1?

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