Help! Short-term SAT score boost by 100 please

<p>Hello :)</p>

<p>I've taken the SAT 5 times and my score until now were:</p>

<p>2012/11/03 1920 (510/770/640)
2013/1/26 2010 (500/770/740)
2013/6/1 2080 (590/780/710)
2013/11/2 2110 (650/780/680)
2014/1/25 2180 (640/760/780)</p>

<p>As can be seen, my scores have been increasing very slightly and now I'm exhausted by taking all these tests and would like to finish the SATs this May. I would like to have a total score of 2280+</p>

<p>SO, the things that I want to ask you are:
1. I really want to have a CR of 700+ and I only have less than a week now. How can I study effectively before I take the test?</p>

<ol>
<li><p>I never got a 800 on Maths. As it can be seen from my scores, I've always missed one question and this effected me greatly on the most recent test. Is there any way that I could not get any questions wrong?</p></li>
<li><p>On the Writing section of the January test, I got 1 wrong on the Paragraph questions and a score of 10 for the essay. I would've gotten a 800 if only the essay score was 11. Since the second test, I've always gotten a 10 and I really want to raise my essay. Are there any of you who can tell me your experience or any method of raising the score of the essay?</p></li>
</ol>

<p>I would really appreciate it if any of my three questions could be answered.</p>

<p>Thank you :)</p>