The members of the Science Club are Caleb, Ann, Trish, Aisha, DeSean, and Binh. They all draw straws to determine which member will give the demonstration at the science fair. Which simulation could be used to determine the probability that Ann will give the demonstration?

Hold on lemme do the work

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.