In this activity, you will solve one problem in these two different ways. Then, you will compare and contrast the methods and determine your favorite.
Problem: The rectangular playing area of a professional football field is 100 yards long. The perimeter of the playing area is 920 feet. The formula for the perimeter of a rectangle is [P equals two times l plus two times w] .
How many feet wide is the playing area? Don't forget to convert the length from yards to feet. (There are 3 feet in 1 yard.)

Solution: There are two ways to solve this problem.
You can solve the formula for the unkno

Question

In this activity, you will solve one problem in these two different ways. Then, you will compare and contrast the methods and determine your favorite.
Problem: The rectangular playing area of a professional football field is 100 yards long. The perimeter of the playing area is 920 feet. The formula for the perimeter of a rectangle is [P equals two times l plus two times w] .
How many feet wide is the playing area? Don't forget to convert the length from yards to feet. (There are 3 feet in 1 yard.)

Solution: There are two ways to solve this problem.
You can solve the formula for the unkno

anonymous · Answer

-wn variable. then substitute. Or, you can substitute, then solve the resulting equation.

Assignment: Your assignment is to solve the problem both ways. A worksheet is provided for you to record your work as you complete this project.