The cable of a suspension bridge is in the shape of the parabola x^2−2,800y+30,800=0. How far above the roadway is the cable's lowest point? (answer in feet.)

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?