<p>1) <a href="http://i.imgur.com/GUHZ4gm.jpg%5B/url%5D">http://i.imgur.com/GUHZ4gm.jpg</a></p>
<p>I think I'm going crazy because the answer key says A) none but if N = 1, then all the numbers would be prime numbers...can someone explain how its none? I chose B) one </p>
<p>2) <a href="http://i.imgur.com/1Z87ONX.jpg%5B/url%5D">http://i.imgur.com/1Z87ONX.jpg</a></p>
<p>I never know how to do these type of graph f(x) or g(x) or whatever problems...any help?</p>
<p>P.S: This is from a Princeton Review Book - based on your experiences, is it usually harder or easier or the same as the real SAT?</p>
<p>1) 1 itself is not a prime number.
2) First find the value of f. You can do so by plugging in (0,4) in the equation y=f - (gx^3)
You’ll get that f is equal to 4. I think it is pretty straightforward after that.</p>
<p>The information about the triangle seems to be there just to confuse you, or perhaps I haven’t given the right explanation</p>
<p>Since the axes are not labeled, you need to use the pythag. thm. to determine the height of the triangle. That’s how you know that the intercept is at (0,4). </p>
<p>If this were from a real SAT, they would never have given those tick-marks. The tick marks enable a student to skip over an intended part of the question and still get it right.</p>
<p>Ahh 1 is not a prime #…forgot about that one</p>
<p>so for #2, after I find the intercept at (0,4) I plug it in
4=f-(g0^3) and f = 4
so how do I find g?
sorrry I’m totally out of it!!</p>
<p>The final step takes advantage of the fact that you also know the x-intercept: (2,0)</p>
<p>So when x=2, y= 0…plug in and solve</p>
<p>Oh right, that didn’t occur to me. Thanks pckeller. The first question is probably level 3 or 4, and the second would be level 4 or 5 I think. They aren’t extraordinarily hard.</p>
