Tony worked 9 hours Monday, 9.5 hours Tuesday, 8.75 hours Wednesday, 9.25 hours Thursday 8 hours Friday and 6 hours Sunday. How many hours
did he work?

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