Forum:Do bonuses stack or compound?

For example, suppose I have a gun that deals 100 damage, a +30% damage bonus from proficiency, and a class mod with +50% damage. Will my final damage score be

100*(1+.3+.5)=180 damage

or

100*1.3*1.5=195 damage?

76.184.151.168 15:54, February 16, 2010 (UTC)Entirely Unlike Tea