<p>^^^ 800%. </p>
<p>Let p = pi</p>
<p>If area of circle is p<em>r^2,
p(3r)^2
= p</em>9r^2
and
p<em>9r^2 - p</em>r^2
= p<em>8r^2 increase
Finally,
(p</em>8r^2)/(p*r^2) = 8, which is equivalent to an 800% increase.</p>
<p>^^ I think it was less than or equal to… </p>
<p>As an aside: I don’t think it was a late enough question for them to make it as hard as you made it. That is, giving an interval of -2 < x < 2 (not less than or equal to, just less than), and specifying integers. It would be 1 by your reasoning anyways, which I do not recall an answer choice for.</p>
<p>If you plug in any number for r into that equation isn’t nine times greater? For example for r=1 you originaly get pi by itself but when you triple it you get 9pi 1 pi times nine is equal to 9pi so wouldn’t it increase by 900% i know it was not one of the answers but i think that would be right</p>
<p>@qq
9 times greater but how much more? 800% more 900% times.</p>
<p>^^ oh i didn’t think you had to subtract</p>
<p>i’m pretty sure it was less/greater than or equal too… also if it wasn’t then did it also say that x had to be an integer? because otherwise x=±1.9999999999999999999 also gives 3</p>
<p>and the 800% one tripped me up, fortunately the next highest answer choice was like 500%. if it had been 900 i would’ve missed it probably lol</p>
<p>typical sat trick. Usually they would put 900% on there too to trick people.</p>
<p>On the interval from -2<x<2 it could not equal 2 or -2 so the highest value to choose from was 1</p>
<p>^ are you sure that it said x had to be an integer? i don’t think it did</p>
<p>I am almost positive it did</p>
<p>Wouldnt the answer be -5<x<-3?</p>
<p>@qqqq I’m almost positive it is. I even graphed it.</p>
<p>@chach what is?</p>
<p>ok, for the max min question the answer was:
-5<=x<3 (Note that there is only a less than sign on the right, not less than or equal to).</p>
<p>I’m positive that was the answer choice, not -5<=x<=3.</p>
<p>If you Plug in one into the equation you get a -3 correct or is the equation i am thinking of wrong</p>
<p>the EQ is y = 2x^2 - 5</p>
<p>Plugging in 1 gets you -3.</p>
<p>Ok in your answer it was a psitive 3 i was not sure sO the answer was -5<=x<-3</p>
<p>My bad positive</p>
<p>Does anyone remember a question with bar graphs about blood types (O, AB, A, B) and what you got for an answer? It was one of those questions where the answers were (I only, II only, I & II, I, II, III…etc.)</p>
<p>Noo…when you plug in 2 for x, u get y = 3.</p>
<p>Ok, if you believe in the argument of less than or equal to or whatever, if you plug in 1.99, you get y = 2.92, which is closest to 3.</p>