Selma wants to know if seventh grade students prefer to do their math homework in silence or with background music. She polled the 24 students in her music class. Eight students preferred to do their math homework in silence, and sixteen students preferred to do their math homework with background music.

Identify the population in the situation above.
A.
students who have math homework
B.
all seventh grade students
C.
students in Selma's music class
D.
students who prefer to do math homework with background music

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?