<p>I know it's been discussed, but the symbol problem...</p>
<p>the equation was a 0 b = ab^2 +a+b I SWEAR.</p>
<p>That would mean II doesn't work, but was that the original equation? I know when I plugged in numbers I squared the ab part. Was I on crack? (I bet u'll say yes, but I swear...)</p>
<p>EDIT: I think I'm wrong, but have no idea why I would do that.</p>
<p>I spent about 5 minutes checking that question. Its I+II. In III, you get an extra "x" on one side. My friend checked it with numbers and got the same answer.</p>
<p>From someone that wishes the SAT was based on memorizing minute details....I can attest that it said real numbers. I looked at it a bunch of times and made 100% absolutely sure that 8.5 would work. </p>
<p>And the one with the a o b definitely had an extra x in the last one, so it was only 1 and II i believe.</p>
<p>It said real numbers. Just because it said real numbers doesn't mean it was easy because you still have to multiply the average by 7, then subtract the sum of the numbers they gave you from that number. THEN you have to check whether there are two numbers between 6 and 20 that would work. I, II, and III all work.</p>
<p>Halycon, why is it not easy if it said real numbers? you'd just need to make sure the two numbers were between 6 and 20 but with decimals allowed it would be too simple.</p>