Part A

Write an expression that represents the perimeter of the football field. Let x represent the length of the football field. Include parentheses In your expression.
Next, write an equivalent expression that does not include parentheses. What property or properties did you use to simplify? Explain.

Part B

The cross-country coach later determines that the length of the football field is 120 yards. All students must run five laps. Using your answer from Part A,
determine the actual number of yards that each athlete must run In the tryouts. In order to make the team, students must complete the laps In 6 minutes. How
quickly must they run each lap?

Part C

Rita is the manager of the football team, and she has been assigned the task of painting a mascot in the middle of the field.The painting fits neatly in the shape
of a square with one side of the painting equal to five yards.The area of square is given by the formula A = s2, where s is the length of a side. What is the area of the
painting In square yards?

On a family trip, Natalie counted 3 groups of 5 motorcycles and an additional 7 solo motorcycles. Write an expression for the number of motorcycles Natalie saw. Then find the number of motorcycles.

Lloyd will tile a square kitchen floor with square ceramic tiles. The number of tiles needed is equal to a² ÷ b² , where a is the floor length in inches and b is the length of the tile in inches. If a = 96 and b = 8, how many tiles are needed?

Reason Abstractly The table shows the amount of memory used on Caleb’s MP3 player. Define a variable and write an expression to represent the total memory used on his MP3 player.

Germaine walks at the rate of 10 feet every five seconds while Nolan walks at the rate of 15 feet every five seconds. If Germaine has a head start of 25 feet, after how many seconds will they be at the same spot?

Use Math Tools The table shows the number of magazine subscriptions each person sold. Write two equivalent expression that could be used to find the total  subscriptions sold.

Admission to a car show costs $9.50. Lunch at the Snack Shop costs $5.50. Find the total cost for four admissions to the car show and four lunches at the Snack Shop.

Five friends ate at a buffet restaurant. The cost of each buffet was $x. Three of the friends also bought a beverage for $2 each. Write and simplify an expression for the total cost.