Expressions with Altitude A mountaineer is changing elevations. Write an expression that represents the difference between the final elevation and beginning elevation. Then write the value of the change. The first one is done for you. Write the values for the labeled cells in the answer boxes below.

What is the distance between the points (2, 5) and (5,9)?

Yuto solved the equation below. what is the solution to yuto’s equation?

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?