The table shows the number of points scored by two basketball teams, Team A and Team B, in their first 5 games of the season. The mean number of points scored by Team A is 4 points less than the mean number of points scored by Team B.
Points Scored in Games
| Game | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Team A | 82 | 75 | 90 | 88 | x |
| Team B | 91 | 85 | 93 | 87 | 89 |
What is the value of ?
