<p>The question concerning the ax+b on the small dog shampoo/haircut one confused me for some reason, otherwise not bad at all!</p>
<p>you had to do system of equations, and make two equations based on the data. then find a and b</p>
<p>@Crosscountryian that question confused the crap out of me. It was the only one I had to skip and come back to. At the end of the test I realized I just had to plug the answers into the given equation and whichever one equaled 12 was right.</p>
<p>i got a = 2/5 and b = 4, but I’m really iffy about it. I didn’t look at any of the other answer choices and I don’t know why.</p>
<p>I think the answer was 4 large dogs?</p>
<p>System of equations,
x + y = 10
20x + 55y = 210</p>
<p>Or something along those lines.</p>
<p>100 pi had to be the distance for the semicirlce ones btw</p>
<p>^ it was 50 pi…each circle’s circumference was 25pi…they were half circles, so you divide each by 2, then multiply by 4</p>
<p>The magnet one wasn’t 3. I made the mistake of using the square root instead of the square I think.</p>
<p>And for the abs(x) = -x, I just looked at x=0 and moved on. ****</p>
<p>I guessed on the clock and picked D(the 4th choice) because it looked good. Hahha I got it right. 16</p>
<p>@ColumbianX
Don’t worry, I stupidly put x=0 and moved on as well.</p>
<p>*<strong><em>. *</em></strong>ING x = 0. It was the last question and I had to pee and the AC was blowing straight down on me. That’s really annoying because I definitely knew how to do it. Man…</p>
<p>Has there been a definite answer to the inversely proportional to square of distance problem?</p>
<p>Does anybody remember what the answer (and letter) was to the cone question? I thought the radius would be 5 and the height 12 or 13.</p>
<p>Also for the question towards the end where they introduced a shape that had four triangles or whatever, was it 1/4?</p>
<p>So what was the real answer for |x| = -x then what does x equal?</p>
<p>Letter answer for the cone one was D. I have no idea how I remember that though 
And the equilateral triangle one was 1:2.
I remember one question with circles where the ratio was 1:1 too…</p>
<p>The magnet was 6 root 2</p>
<p>The real answer for the very last question was F.</p>
<p>@calllikid
I’m pretty sure the four triangles was 1/2
It looks like the Zelda Triforce symbol haha. Therefore every side of the smaller triangle is half of the larger triangle.</p>
<p>Never got a 1:1, I got a 2:1 once though and a 1:2</p>
<p>@callikid</p>
<p>For the cone I’m sure the radius was 12, and the height was 5. I had your answer except I read that they wanted it to be rotated around the vertical line (the 5 length line)</p>
<p>For the equilateral triangle, I used to the formula s^2/6(learned this in calc integrals) to get the area of the triangle. Then went on from there.</p>
<p>I thought the same thing ^^^^^^^ but 100 pi wasn’t one of the answers so i did it the other way and got 240 pi</p>
<p>The answer to the triangles one was 1/2…the reason is that the ratio of the areas (3D) is 1:4 but the ratio of the perimeters (2D) has to be the squareroot of 1/4 which is 1:2 or 1/2</p>
<p>Cone was 240pi, I want to say D, but not positive.</p>
<p>For the equilateral one I just drew the triforce thing from zelda and you could tell it was 1:2 just by looking at it.</p>