During a football game, a team lost 9 yards on the first play, then gained 3 yards on each of the next 3 plays. Which integer represents the total number of yards at the end of the first four plays?

–3
0
9
18

To calculate the total number of yards after the first four plays, we can subtract 9 yards from the gain of 3 yards on each of the next 3 plays.

Total yards = (-9) + (3 + 3 + 3) = -9 + 9 = 0

Therefore, the integer that represents the total number of yards at the end of the first four plays is 0.