<p>i completely forgot about that one… ^
i think i got 1…but i could be totally imagining that.</p>
<p>Haha, I used the solver on my TI-89 and got 11/29.</p>
<p>wait so was the f(100)=1, thats what i seem to be getting as the general consensus…</p>
<p>I got 11/29 for the y/(2x-y)
x = 20y - 10x
11x = 20y
x = 20y/11</p>
<p>Substitute for x in the 2nd equation:
y / [ (40y/11) - y]
y / (29y/11)
11/29</p>
<p>OH it was that one.
jk i got 11/29 too. 
i think they were all fractions so i don’t know why i said i got 1!</p>
<p>OMG I’m so mad at myself. I spent forever trying to figure that 11/29 out and then realized all I had to do (the easiest way too) was to plug in a number for 1 of the variables and then solve for the other one.</p>
<p>wow. that calculator is awesome. I didn’t even think about it because I had no intentions of solving a system of equations lol.</p>
<p>I substituted by hand and then I put the resulting equation into the 89.</p>
<p>what was the one , early in the test , something like f(x)=2x-k , g(x)=k, f(g(x))=… solve g(x)</p>
<p>@ natim1</p>
<p>If you decided to plug in a number, you most likely would have gotten teh wrong answer</p>
<p>ti-89’s ftw!</p>
<p>i think it was like f(x)= g(x) +1?</p>
<p>Was the 11/29 one question 45 maybe? I’m hoping it was that because I know I omitted that and my bubbling might have been screwed up if it wasn’t in the 40s</p>
<p>@ Jenovaside - g(x) = 2.</p>
<p>11/29 one was 28 I think.</p>
<p>^ I think I got 2 for that question also.</p>
<p>not that one, was another question, 11 i think, mabe 14</p>
<p>oh jk. that was a different equation with f(x) and g(x).
i got 2 for that one also. ^_^</p>
<p>i think the 11/29 one was in the 30s?</p>
<p>
</p>
<p>TI-89 FTMFW!</p>
<p>Yeah. I got g(x)+1 too.</p>
<p>Guys, can the machines that score the tests distingusih between an erased bubble and a filled in bubble 100% of the time? </p>
<p>I had many erased bubbles and it would be a shame to have points taken of for questions that were answered correctly : (</p>
<p>can someone consolidate?</p>
<p>I think the machine can (probably picks the one that is darker or something). I had a bubbling problem and ended up erasing a lot last year on SAT Chem and still got a 780.</p>