If (x, y) is a solution to the system of equations, what is the value of x?

5
2
x + y = 2
x +
2
3
y = 4

A) 4
B) -4
C) 12
D) -12

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