Suppose a and b represent linear expressions. if a + b = 2x -2 and a - b = 4x- 8, find a and b.

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

Find the distance between (7,-6) and (-3,-9)