Pedro is an avid hunter and wants to better track his results. He has had 4 44 hunting trips where he has gone home with 4 birds and 7 hunting trips where he has gone home with 6 birds. He also knows that he averages taking home 6.95 birds per hunting trip. This information is summarized in the table below. Fill in the missing blank with how many hunting trips Pedro took where he brought home 9 birds.