Afootball team lost 9 yards on its first play. it then gained 9 yards on its second play.

a. what expression can be written to represent how many yards the football team is from where it started? explain your reasoning.

b. how many yards is the football team from where it started?

c. suppose that, instead, the football team had gained 9 yards on its first play and lost 9 yards on its second play. would the team’s position on the field have been any different than it actually was after the first two plays? why or why not?