Write a real world scenario for y=2/3x-3

What are “like terms”? why can we only add like terms?

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.