PSAT '09 Form W Thread

<p>oh, and the one about there being only one value where f(x)=0</p>

<p>Was that just the straight line?</p>

<p>Maybe, we’re not talking about the same question… do you remember the actual wording?</p>

<p>yea it was (150+10x)/x there is an x as a denominator because it asks the cost of one tshirt not the sum of all.</p>

<p>it was the only function which didn’t cross the x-axis more than once… I think it was a nice linear function…</p>

<p>the one with f(x) = 0 was a double curved line. It was kind of like a vertically stretched x^3 function. </p>

<p>there was only one graph where the graph went through the origin which was the answer.</p>

<p>Oh ok, I didn’t know that it was just the cost of one shirt. </p>

<p>Ya sry my 2nd question was confusing.</p>

<p>does anyone know the answer to the "only one value for x is f(x)=0</p>

<p>was it the picture of the straight line?</p>

<p>yes angel it was the straight line</p>

<p>oblivi0n: Did the x have to equal 0 tho? or just f(x)</p>

<p>thanx mabs</p>

<p>does anyone remember the exact wording of the hats and scarves problem. There are so many conflicting answers in the past posts about whether it was 3/2 or 2/3</p>

<p>It was the straight line… only the f(x) had to be zero…</p>

<p>The hats and scarves was 3/2 - no debate about it :)</p>

<p>It was the cost of ONE shirt??? Aww shiesan…now I know I have 2 wrong. This sucks.</p>

<p>It was def 3/2 100% sure</p>

<p>awesome… i got that one!</p>

<p>o, and in the writing section alot of people are talking about the d.c. question.</p>

<p>I think the answer was A.</p>

<p>The sentence was like</p>

<p>Roger suggested “to build” the capitol “at the center of washington d.c.”</p>

<p>I put that “to build” was wrong, not “at the center” b/c “to build” should be “building”</p>

<p>idk if this is right? I can’t remember the other underlined parts</p>

<p>Ugh…I really want my score right nowwww…I can’t even put my mind on AP Bio @ the moment w/o thinking about all of the stupid mistakes and things I overlooked on the test</p>

<p>Can anyone confirm the f(x) = 0 question for sure?</p>

<p>Yes, f(x) = 0 simply meant that Y = 0 on one point. It mentioned something about 1 point, so the other options couldn’t be right.</p>

<p>I think we already did confirm the f(x) = 0 question :slight_smile: its the linear function</p>

<p>to build is definitely wrong</p>

<p>I am almost positive the f(x) = 0 problem was the straight, linear equation. The question asked which graph had only one value where f(x) = 0, and that was the line. The graph that passed through the origin had both x = 0 and f(x) = 0, yes, but it also curved and crossed the x-axis again, which meant another value of f(x) = 0.</p>

<p>is that what you put? do you remember that question? or did i get the wording wrong</p>

<p>regarding the DC question, I marked that “to build” was wrong. I thought it should be “building” also. I didn’t even notice the “at the center” vs. “in the center”.</p>