<p>The last SAT I took. I scored a 630. I've been trying to improve, and I've been practicing in the collegeboard book. Going over problems and reading the explanations, etc. I've taken some of the practice tests, but my score has still remained in the same. Any advice?</p>
<p>The college board's explanations aren't always the best way to solve math problems. Try looking for alternative ways to solve them. Most medium and hard problems can be solved in two or three completely different ways...once you start to recognize this, you'll have more options for solving the really hard ones. You've got to be flexible. Prep books, tutors and CC forums are all great places to look for alternative solution strategies...</p>
<p>Yeah, like PeteSAT said the forums here can be a real help. If there are any problems you are unsure of you can post them here...</p>
<p>Thank you.
These are the questions I'm having a hard time to understand. If anyone can help explain any of these, that would be really great. </p>
<ol>
<li><p>Dwayne has a newspaper route for which he collects k dollars each day. From this amount he pays out k/3 dollars per day for the cost of the papers, and he saves the rest of the money. In terms of k, how many days will it take Dwayne to save $1000.
a) k/1500 b) k/1000 c)1000/k d)1500/k e)1500k
I omitted this one. </p></li>
<li><p>The figure above shows the graph of y=g(x). If the function h is defined by h(x)=g(2x)+2, what is the value of h(1).
This was a student-response question. I got four. The answer was 3.</p></li>
<li><p>In the xy-coodrinate plane the graph of x=y^2-4 intersects line l at (0,p) and (5,t). What is the greatest possible value of the slope of l?
Another student-response question. I got five. The answer was 1</p></li>
<li><p>If (a+b)^1/2=(a-b)^-1/2, which of the following must be true?
a) b=0 b) a+b=0 c) a-b=1 d) a^2+b^2=1 e) a^2-b^2=1
I omitted this one.</p></li>
<li><p>Set X has x members and Y has y members. Set Z consists of all members that are in either set Xor set Y with the exception of the k common members (k>0). Which of the following represents the number of members in set Z?
a) x+y+k b) x+y-k c) x+y+2k d) x+y-2k e) 2x+2y-2k
I put B. The answer is D.</p></li>
<li><p>At a bottling company, machine A fills a bottle with spring water and machine B accepts the bottle iff the number of fluid ounces is b/w 11 7/8 - 12 1/8. If machine B accepts a bottle containing n fluid ounces, which of the following describes all possible values of n?
(all equations on the left have abs value bars)
a) n-12=1/3 b) n+12=1/8 c) n-12<1/8 d) n+12<1/8 e) n-12>1/8
I omitted this one.</p></li>
</ol>
<p>1) algebra method: if dwayne is spening 1/3 of k, that means hes saving 2k/3. so to 2k/3 a day X x days =1,000. solving for x yields 1500/k.
Alternatively you could substitute a number for k such as 30. Answer is D</p>
<p>2) since h(x) =g(2x) + 2....h(1) = g(2) + 2. If you look at the graph g(2) = 1. 1+ 2 = 3.</p>
<p>3)plug in the x values into the given equation in order to get the ordered pairs. p= + or - 2 and t = +or - 3. find which gives the largest slope which is 3- neg. 2/5-0 = 1</p>
<p>4) In this one i dont feel like typing everything out but what you have to do is write the two in radical form, bringing (a-b)^-1/2 to the bottom and then cross multiplying. finally square each side yielding a^2-b^2=1</p>
<p>5) you probably forgot to count k twice since k is in both X and Y. you can also plug in numbers for this problem.</p>
<p>6)plug in a number between 11 7/8 and 12 1/8. the most easiest number is 12. only C adheres to the stipulations in the problem.</p>
<p>thanks a million :)</p>