Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Week | Date | Opponent | Result | Attendance |
| --- | --- | --- | --- | --- |
| 1.0 | September 21, 1975 | New Orleans Saints | W 41-3 | 54414.0 |
| 2.0 | September 28, 1975 | New York Giants | W 49-13 | 54953.0 |
| 3.0 | October 5, 1975 | at Philadelphia Eagles | L 26-10 | 64397.0 |
| 4.0 | October 13, 1975 | St. Louis Cardinals | W 27-17 | 54693.0 |
| 5.0 | October 19, 1975 | at Houston Oilers | L 13-10 | 49566.0 |
| 6.0 | October 26, 1975 | at Cleveland Browns | W 23-7 | 56702.0 |
| 7.0 | November 2, 1975 | Dallas Cowboys | W 30-24 | 55004.0 |
| 8.0 | November 9, 1975 | at New York Giants | W 21-13 | 57242.0 |
| 9.0 | November 16, 1975 | at St. Louis Cardinals | L 20-17 | 49919.0 |
| 10.0 | November 23, 1975 | Oakland Raiders | L 26-23 | 53582.0 |
| 11.0 | November 30, 1975 | Minnesota Vikings | W 31-30 | 54498.0 |
| 12.0 | December 7, 1975 | at Atlanta Falcons | W 30-27 | 52809.0 |
| 13.0 | December 13, 1975 | at Dallas Cowboys | L 31-10 | 61091.0 |
| 14.0 | December 21, 1975 | Philadelphia Eagles | L 26-3 | 49385.0 |
Question:
What week of the season had a date of october 5, 1975?
Answer:
3.0