<p>^ Check my post, I linked it there. LOL MANUALLY? use the arithmetic sum/225</p>
<p>or do 225/2 then round up.</p>
<p>why round up?</p>
<p>I DISAGREE, i was also pretty sure
Babysitting was DEFINITELY choice D-- (-2x+32.5)/3.5</p>
<p>Was the other question to the probability 5/24 or something?</p>
<p>What question was inverse one?</p>
<p>The 225 one...</p>
<p>The wording was "average of the first 225 POSITIVE INTEGERS"</p>
<p>If zero were included, it would be 112.5, however zero is not positive or negative, so its the average of all integers from 1 to 225 inclusive.</p>
<p>The answer is 113.</p>
<p>Bigweight, based on the number of other questions you don't understand, I wouldnt be so confident. The babysitting question was a BASIC logic problem. The question: If a man made a total of 32.5 dollars; 2 perhour from some job and 3.5/hour from babysitting; how many hours did he babysit as a function of the other job. </p>
<p>(total amount)- (number of hours doing other job * wage of job) = amount made from babysitting / (wage per hour of babysitting)</p>
<p>plugging in... 32.5-2y/3.5 = number of hours babysitting...</p>
<p>^^^it was 5/24 lolilaughed</p>
<p>and the babysitting was also right!!!</p>
<p>For future refrence, are there any programs that allow a TI-89 to store a history of the last 100 or more answers? This would be really helpful in reconstructing these tests :D</p>
<p>well JJJJ^ so far ive only missed 1 on the questions agreed, so if i were u i wouldnt be so sure either</p>
<p>^ I'm pretty sure there is. I skipped the babysitting prob :/</p>
<p>hahaha you just asked several questions a few posts ago hahahaha. and i havent missed any, and this was a very basic problem, so I am sure.</p>
<p>why is my post above bigweights???</p>
<p>What was the probability question (with the answer 5/24?)</p>
<p>I don't remember it.</p>
<p>the marbles one?</p>
<p>the marble question was probability with the answer of 5/24</p>
<p>^ Yes it was. choose blue instead of red so (1-prob)</p>
<p>I disagree with the babysitting question. Can someone post that question?
X = hours
The pets were $2X
the baby sitting was $3.5X
and she totally earned $35?</p>
<p>So, that would be 2X + 3.5X = 35
so, we want to isolate the 2X part
2X = (35 - 3.5X)
X = (35 - 3.5X) / 2</p>
<p>I think this is the answer. Again, if anyone remembers the question, please post it.</p>
<p>oh 1/3(5/8). Yeah that was easy.</p>
<p>I have no idea why there is so much concern over the babysitter question. </p>
<p>You just had to solve the equation 3.5y+2x=35 for y.</p>
<p>y clearly = 32.5-2x/3.5</p>
<p>lolilaughed below me, I agree. Wording was sort of weird, I had to think about it for a few secs and read it over.</p>
<p>^ It was just the wording of the problem confused a lot of us (including me) D:</p>
<p>consolidate a list someone?
=]</p>
<p>AShwin- you made an obvious algebraic error. The man did not work at the pet store and babysit the SAME number of hours; therefore you can not use the same variable for both. Your initial equation should read: 2y + 3.5x = 35.</p>
<p>the way WANTIVY posted it makes it seem completely right, and I agree.</p>
<p>BUT...............i thought it was the same number of hours, not different ones, and ur y was actually the 32.5</p>
<p>but anyways, it just one problem...</p>