Will give brainliest!

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

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

Solve for x. x/5+ 1 = 7 x = 5 5/6 x = 30 x = 35 x = 40