Hi Megan,

I am sorry that you are feeling frustrated by the course.  When you go back through a lesson a second time it is acceptable to type a single letter into any blanks, however please consider that typing the correct answer each time is good reinforcement for your learning.

I understand that you would prefer we tell you why answers are wrong, but the reality is that the "Why" isn't important.  What is important is "What" the correct answer is, that way you only reinforce good information.

I do agree that it would be helpful to repeat the formulas used to discover answers, and it may be that as we continue to work to improve this course we can start including the formula with the correct answers.

Good luck with your course, and remember to come to the forums and search or post a question if you have trouble understanding any concepts or applying any formulas.

Sandra King.