The forth wall acts as a barrier between the fictional world and the real world. I would believe the answer to this is C, the characters speak directly to and interact with the audience.
Matthew sells tickets for a school lottery at 3$/each. He wants to know how much profits he will make according to the number of tickets sold knowing that he starts with 2$.
If 3b - 4 = 2, then 3b = 6, or b = 2. If b = 2, then 2a + 3(2) = 12 2a + 6 = 12 2a = 6 and then a = 3.
