Hadley works at a fitness center. She decides to collect data relating the number of hours different people who use the fitness center exercise per week to the number of calories each person burns. The scatter plot shows the data she gathers and the line of best fit.

Using technology, she finds that the equation of the line of best fit is y = 220x.

When she signs a new fitness center member up, he says that his goal is to burn 880 calories each week. Using her data, how many hours of exercise should Hadley recommend for him?

A.
5 hours
B.
4 hours
C.
3 hours
D.
6 hours
X represents hours of exercise
Y represents number of calories burned

Runners run around the school's football field. the cross country coach determines that the width of the field is seventy yards shorter than the length. 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?