I took a exam based on chapters 1-3 which was based on class/homework lecture and my notes were not as through as I had hoped which lead to a low score but my teacher allows for test corrections, and the test was multiple choice and short answer, and I would like some help in reviewing my wrong answers and submit my corrections to get some points back on the test, assuming that I get half credit back how many points of 50 questions along with the short answers will I get back and she not only wants the letter of the question but the why behind it?