=-= an angle half the measure of zyx would be classified as
a) acute.
b) obtuse.
c) right.
d) straight. answer it plzs get it rigtht plz ill give 43 pts

The path traveled by a bottlenose dolphin as it jumps out of water is modeled by the equation y=-0.4+3x, where t is the height above water and x is the horizontal distance in feet. if a beam of light is shone upward at an angle modeled by the equation x+y=10, at what height from the waters surface will the beam of light hit the dolphin