What is the greatest common factor of 24 and 40?

What are the soultion(s) to the quadratic equation 40- x^2=0

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

The sum of two numbers is 17 and their different is 5. find one' answers