<p>wat was the one with the sum of a series =300 and a difference of 5 from n1 to n15?</p>
<p>i got it was the 7.78 increase</p>
<p>NYC problem was 7.78%</p>
<p>how do you get 107%, i don’t remember this question?</p>
<p>for that one i got 5</p>
<p>sums… 600=15/2(15x+(14)5)</p>
<p>DAMNIT FOR THE sphere’s radius i put the diameter by accident.</p>
<p>5 for the arithmetic sequence. i ran out of time and did a quick educated guess. lucky guess :)</p>
<p>i think its either 2 or 4</p>
<p>the polynomial problem should be 2, 3, or 4.</p>
<p>h(x) can have 2 roots if f(x)=m(x-a)(x-b) and g(x)=n(x-a)(x-b); h(x)=mn(x-a)^2(x-b)^2 and you have two distinct roots.</p>
<p>h(x) can have 3 roots if f(x)=m(x-a)(x-b) and g(x)=n(x-a)(x-c); h(x)=mn(x-a)^2(x-b)(x-c)</p>
<p>h(x) can have 4 roots if f(x)=m(x-a)(x-b) and g(x)=n(x-c)(x-d); h(x)=mn(x-a)(x-b)(x-c)(x-d)</p>
<p>5 is right, and I’m convinced that 7.78% is right too:</p>
<p>16.1(1.003)^25
all over 16.1 for the ratio
and you get 1.0778</p>
<p>oh, and can someone confirm the previous poster? 2, 3, or 4 was my guess, and I’ve already assumed it was wrong.</p>
<p>was 5 the last choice (E)?</p>
<p>Wait. For the NYC problem, here’s the equation i used:</p>
<p>original * (1 + r)^n</p>
<p>So 16.1*(1.03)^25 or so</p>
<p>Which is 33.71, or about a 100% increase. How did I err?</p>
<p>what was the answer to the last question?</p>
<p>if NYC grows at 3% each year, it’s gonna grow more than 7.5% total in 25 years, right? or am i way off base here</p>
<p>depends on what form you had, i had the cone question and got 4.8</p>
<p>It grew .03 percent per year.</p>
<p>Hmmmm wasn’t it .3%?</p>
<p>Well it certainly wasn’t 3%, but I recall it being .3 %</p>
<p>im pretty sure it said .3%</p>
<p>it should be 7.78, just say x=5 and multiply it by 1.003 and u get 1.0778 increase.</p>
<p>it was .3%</p>