The Green Bay Packers returned to Lambeau Field for the first time since their victory in the NFL opening kickoff game on September 8 and continued their early season success by defeating the visiting Denver Broncos, 49-23. The Packers jumped out to an early lead, as they led 21-3 with 12:18 remaining in the 2nd quarter. The Broncos countered with two straight touchdowns to cut the Packer lead to 21-17, but the Packers responded by scoring 28 unanswered points to win in blowout fashion. Packers QB Aaron Rodgers had a career day, completing 29 of 38 (76.3%) passes for a career-high 408 yards. He threw 4 touchdowns (one to each WR Jordy Nelson, WR Greg Jennings, WR James Jones, and WR Donald Driver) and an interception. Rodgers showed his versatility by rushing for scores of 11 and 8 yards as well. He became the only QB in NFL history to record at least 400 yards passing, with 4 touchdown passes, and 2 rushing touchdowns in one game. WR Greg Jennings caught 7 passes for 103 yards to go along with his touchdown and RB James starked added 63 yards rushing and 38 yards receiving. On defense, the Packers forced 4 turnovers (3 INT and 1 FF), most notably an interception by CB Charles Woodson in the first quarter returned 30 yards for a touchdown. Broncos QB Kyle Orton threw for 273 yards, 3 touchdowns, and 3 interceptions in the loss. This was the first-ever regular season game to end with a score of 49 to 23. The loss dropped Denver to 1-3. They return home to take on AFC West-leading San Diego next Sunday. Green Bay (4-0) remained 1 of 2 unbeaten teams (Detroit) through the first 4 weeks of the 2011 NFL season. The Packers go on the road next week to take on the Atlanta Falcons on primetime, Sunday Night Football. It will be a rematch of an NFC Divisional game from the 2010-11 NFL Playoffs, a game won 48-21 by Green Bay en route to winning Super Bowl XLV.

Based on the above article, answer a question. How many of Rodgers passes were incomplete?
9