Im sorry for asking two question in once but the First one is just to know if you guys can check my work. Question number 16. is the one i dont understand at all..
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Question 16 was already asked and answered by several of us here: http://www.mathhelpforum.com/math-he...em-168392.html
Keep in mind that these are not questions that you should be focusing on at this stage. These are Level 5 problems and you should be focusing on Level 1, 2 and 3 problems.
To put this in perspective, you can get a 700 in SAT Math without ever looking at a question that is this difficult (of course any 700 students that might be reading this should be practicing problems of this level).
I'm only going to get "preachy" on you once. If you continue to post problems of this level, then from now on I will simply answer them, but I feel that I am doing a disservice to you if I don't at least warn you.
Continuing to do problems of this level at this stage will have the following negative effects:
1) practicing these problems will not improve your SAT score. If you were to walk in and take the test tomorrow, then you should only be answering up to question 8 on this section. In 3 months time we might push that to question 12 (maybe even a bit higher if you do things right). In any case, you will most likely never be attempting a question this hard on the actual test. If you do attempt a question of this level on the actual test your score will be lowered!
2) practicing these problems is taking time away from practicing the types of questions that you will actually be answering on the test.
3) practicing these problems will get frustrating after a while, you will burn out faster, and you are more likely to stop preparing for the test.
4) practicing these problems will reduce your confidence level and you will experience more test-taking anxiety when you take the test - this will absolutely lower your score.
There are 4 main subject area that appear on the SAT:
Number Theory
Algebra and Functions
Probability and Statistics
Geometry
Each of these four subject areas will appear on every SAT in varying levels of difficulty - from Level 1 to Level 5.
How to tell what level problem you're doing depends on what book or other practice material you're using.
If you're taking a practice test (either a real SAT or a simulated one), then the question number itself will roughly tell you the difficulty of the question. If the section has 16 questions (like the section you took the question from in the OP) then as long as you are focusing on the first half of the questions, you will be doing mostly level 1 through 3 questions. So this particular section you should be focusing on the first 8 questions. When you're doing practice tests I suggest you try to use actual old SAT exams. If you can't get hold of any of these, then the 10 practice tests from the blue College Board SAT book will have to do. I know you said that you don't have money, so perhaps you can borrow this book from someone that has already taken the SAT - almost everyone who took an SAT should have a copy.
If you are doing practice questions from a book, then you need to read the introduction of the book to determine how they give their problems. My book, for example gives the Level and Subject Area for each question. I think the Princeton Review tells the comparable question number that it would be on the SAT. There is no uniform way this is done. There should be lots of free online practice problems as well, but again you'll have to determine how they let you know the difficulty level of each problem.
I do have the blue book and i practice has much has possible usually 10 minutes since i got a lot of Projects in school at the moment, and exams.
But anyways are you ok if i ( send you in message/ or post a question) With the time i took? because i heard i should take 1-1 in a 1/2 minute for each question is this truth? i already did one which is logical about apples but i can't understand how to find the solution i could send it right now or post it
I would keep your posts to the forums so that other people can benefit from the discussion. But feel free to pm me when you post to let me know that there is a post you want me to see.
A general guideline for answering SAT questions is the following: try to be aware of when you've spent about a minute on a problem. At this point if you understand the problem and think you can solve it, then continue. If not, then move on to the next question and come back later if there's time.
You can take up to 2.5 minutes per question based on your current level. This will enable you to answer about half the questions in the section. Keep in mind that this will change if you start breaking a 400. NB: This paragraph is NOT advice for everyone - just the OP.
And go right ahead and start posting the questions you're having trouble with.