If 3 moles of O2 reacts with 4 moles of Ba, what is the limiting reactant

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite