<p>bintsk
number of triangles in 101st</p>
<p>I got 2002 instead of 840, because it asked for 14 combination 5 too</p>
<p>^Matthew5, Don’t you have to only multiply the combinations together? You don’t have to add the separate groups (juniors and seniors) together and compute its combination again.</p>
<p>Sorry for asking this, but did any of you understand how to do #45-the one with the exponential regression problem. That was the only one i wasn’t sure of. It would be great help if any of you replied.</p>
<p>Ooops yeah I didn’t mean the sum 
sorry about that</p>
<p>I’d like to add that I got 840 as well. And for the triangle one, I got 201.</p>
<p>:(… uhm I wasn’t sure about that one either… It think the values were 0weeks/300, 5weeks/850, and 10 weeks 1520…</p>
<p>Cerca yeah that would be true if it was asking for each one and their total, but this said how many ways can 5 be arranged i thought? In Barron’s it says do what I did.</p>
<p>o.o wasn’t it saying the 25th and 75th percentiles so 50%…? I’m not sure I had barely any time to look at that one</p>
<p>50% TenAcidT. That is the answer</p>
<p>pretty sure the box plot is 50%. thats the definition of a box plot…</p>
<p>I got 24 weeks for the number to be over 10,000</p>
<p>The two values were on the 1st quartlie and the 3rd quartile. Those are the 25% point and 75% points on a box and whisker plot. 75-25=50</p>
<p>pretty sure it’s 21 for the amount of weeks for exponential regression because it said at LEAST 10000</p>
<p>Thanks levlevlev11 for replying quickly. Can you elaborate on how you obtained the answer.</p>
<p>Well I just checked back in my calc and I had 0,400 not 0,300
That could completely change the answers. Either I typed it in wrong or you typed it wrong here on the page</p>
<p>if anyone else remmebrs more questions please post.</p>
<p>And all you have to do is have a TI-84 and use the ExpReg on the Stat Plot setting. Just input the correct x and y values, and calculate the exponential regression. Then just use the formula to find when it’s over 10,000</p>
<p>It’s (0,400)</p>
<p>Thanks Levlevlev11 & Johnkim614. You guys were a big help.</p>