<p>Can anyone confirm the ax^2+bx+c=x one?</p>
<p>What do you think 5 omits with 7 wrong would be</p>
<p>
</p>
<p>Actually, you can transform that to ax^2+(b-1)x+c=0, which can have 2 solutions.</p>
<p>
</p>
<p>Probably about 730, at least according to the PR scale I just looked at.</p>
<p>the question asking for the slope of the line from a midpoint to the origin. Did you guys get -1 for the slope? I felt like I ****ed it up but forced myself to keep going.</p>
<p>can someone pleaseeee consolidate all the answers?</p>
<p>@Laerties: Yeah it was -1</p>
<p>What was the answer for the question with a graph of an equation: a(x-b)(x-c)(x-d)?
a>0, but was it D, or E?</p>
<p>What about the 5.2% annual interest compounded quarterly?</p>
<p>@emadwilliam</p>
<p>I said D because b can equal c, because one zero for the function touched-and-turned (even multiplicity) when the other one went through (odd multiplicity). So that means that c can’t equal d, to compensate for the degree of the function. Someone correct me if I’m wrong.</p>
<p>Did anyone else get I and III for the question about inverses? It asked which was the same as its inverse and the choices were I. f(x) =1/x II. f(x) = (1/x)+1 and I do not remember the third option.</p>
<p>yay! @Laeteris 
same</p>
<p>Yes, I and III</p>
<p>consolidated list:</p>
<ol>
<li><p>3x^2/x-1 is undefined at x=1</p></li>
<li><p>difference between lowest and highest point of wave 4.2cos(…) = 8.4</p></li>
<li><p>sphere and cone with volumes equal to 1000: height of cone is 24.82</p></li>
<li><p>line equidistant from two points 1, 1, 2 and 1, 2, 2 is y=3/2</p></li>
<li><p>log2(x) = -1.7; x= .31…</p></li>
<li><p>slope of line intersecting mid point of other line: -1</p></li>
<li><p>telephone line probabilities: 4/9</p></li>
<li><p>mean score problem: 21.667</p></li>
<li><p>standard deviation: .1 (it’s unchanged)</p></li>
<li><p>equation with only two real roots: (x^2-1)(x^2+1)</p></li>
<li><p>how many ways can the samples be selected? 7280</p></li>
<li><p>with m and n integers -4…4 inclusive, how many pairs (m,n) satisfy 4^m=2^n: 5 </p></li>
<li><p>x=arctan(y); root(1-y^2) = lsec(x)l </p></li>
<li><p>length of RT in terms of the angle (x): 1 - cos(x)</p></li>
<li><p>probability that two integers 1…10 inclusive add to seven: .06</p></li>
<li><p>constraints on the constants of a cubic function: a>0, b=c, d does not equal b,c</p></li>
<li><p>area of the triangle formed using apex of 2sin(2x) function: pi/2</p></li>
<li><p>what coordinates is the circle centered on? 3, -2</p></li>
<li><p>if mx + 7 is parallel to kx - 7 then k=m</p></li>
<li><p>which functions are the same as their inverses: I. and III. I think those were 1/x and
1/(x-1) + 1 respectively. </p></li>
<li><p>how thick is the paper after its folded 12 times: 10ft</p></li>
<li><p>the algebraic one using the weird triangular and circular symbols: 3</p></li>
<li><p>for the compounded interest one I got three more than what it would have been had the money been compounded yearly.
$*(5.2%/4)^4. I forget what the original amount was</p></li>
<li><p>sinx^2 = .9; 1/cos(x) = .56</p></li>
<li><p>what does the function approach as x–>2/3: infinity (it’s unbounded)</p></li>
</ol>
<p>These are the ones I remember currently. They aren’t numbered how they were on the test. Update it if you want (I don’t plan on going back through the whole thread).</p>
<p>I omitted about 6-7 questions and looking at that^, I got at least 2 wrong.</p>
<p>What about the annual 5.2% interest compounded quarterly?</p>
<p>There was a question about prime numbers and the answer was 19. It asked if p is a prime number in which case is 2p+1 not prime.</p>
<p>^yay! phew</p>
<p>There was also a question about a translated parabola and the answer was something like (x-3)^2 + 2</p>
<p>The answer was…</p>
<p>1 unit to the right, k - 1 units up. After completing the square.</p>
<p>Pretty sure I got a 780-790 on this test (7 omits and 1 wrong). I’m happy with it :)</p>