What is the answer please hurry this is to pass my class 10 points!!!

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?