In ΔCDE, \text{m}\angle C = (5x+18)^{\circ}m∠C=(5x+18) ∘
, \text{m}\angle D = (3x+2)^{\circ}m∠D=(3x+2)
∘
, and \text{m}\angle E = (x+16)^{\circ}m∠E=(x+16)
∘
. Find \text{m}\angle D. m∠D.

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