I am currently practicing for my CSWA Exam and I am woried that I will fail no matter what. I have attempted this part several times and I get Question 1 correct all the time. But as soon as I change the variables for question 2, my answers do not match the answer key... No other mofications done... just change the numbers, and I cant get the part to weight what it should. Has this happened to anyone else? Can anyone give me some advice?