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

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?