Which of the tables represents a function? Table P Input Output 8 3 1 7 5 4
Table Q Input Output 9 3 9 5 4 2
Table R Input Output 7 2 8 6 7 3
Table S Input Output 1 7 1 5 9 2

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