Sounds like great advice from @nikipedia and @PnL
Also, when taking the test skip ones that are difficult for you and go back later, just be sure to skip correctly on the answer sheet. Always check the question number and answer number when filling the bubbles.
Lastly read the question well. Do not get fooled by questions that ask you for the answer that does NOT apply, or listing numbers greatest to least. These type of exceptio questions can get you when you are under stress and trying to get through a long test. With math always check your answer by filling in the number you have solved for and making sure it works in an equation.
If you took a foreign language life Spanish you are at an advantage for vocabulary and grammar in my opinion. If a vocabulary word you have never seen before comes up, stop and see if maybe you can figure out the latin root. For insance words like castigate, verdant, culpable, pensive may be difficult for most 17 year olds, but if you speak Spanish and see multiple choice they will be much easier to figure out.