I'm playing a level 5 Eladrin Ranger (I think it's a pre-gen) with 4e rules. On my character sheet under attacks it says:
Longbow: +10 attack, 1d10+1 damage
What is the +10? Do I add it to my attack roll? Cause that'd be awesome, but adding 10 to every roll seems kind of OP. I know how to do the damage, I only want to know what I do with this +10. I can't find an explanation anywhere.