How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/18100.0*Average seed
Heschel 3 Flatbush 5 +0.7
Flatbush 1 Frisch 5 -0.5
TABC 10 MTA 2 +0.2
Kushner 2 TABC 0 +0.1
Haftr 2 Frisch 12 -0.0
North Shore 0 MTA 13 -0.0
Week of 5/28None
Week of 6/2None
Points
Chance Will Make Playoffs