Which of the following is a root of the polynomial function below? F(x)=x^3-3x^2+x+5
A. 1
B. 2+i
C. 2
D. -2+i

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