okay buddy
i guess most of US still being lazy in bed
so i will attempt to address ur question
the line that has + next to it means that for every $100 wagered you get the + back
example Philly +110 means you get $110 for every $100 wagered
when a team has - next to it,that is what you need to wager in order to win $100
KC -105 means that you need to bet $105 to win $100
the whole line is set to $100 basically so you see -150 for example and that means you need to bet $150 to win $100
+ means what you win if you bet $100
- is what you need to bet to win the $100
i hope i got it right and hope it helps