How do I use the meylani Math II book

<p>I own a PR and tried the first exam. Got 500. I am aiming for 700s.
I then did the first three practice exams, and my scores are around the 500s. I feel that just taking the test and reviewing how i got wrong did not help me to improve and i seem to be more slower with my calculator when i try to plug in. Now I am just doing the problems without timing on 4 and 5, but i still dont feel confident. Some of the questions are really confusing to me and giving me headaches (because i thought how one method would work but then they show a solution would never come up to my mind). Most of the answers i can solve are the plug in.</p>

<p>I plan to use the 2nd exam in PR on the day before the test
Is there something wrong with me? I need help?</p>