<p>I took the practice Math IIC for Sparknotes just now and got an 800. </p>
<p>I missed 4 and omitted 2. I finished in 44:05 (it will be longer on the real thing because of bubbling stuff in and double-checking my work more). </p>
<p>One of the problems I missed was a vector, and the other one required me to find the magnitude of a complex number. I have no idea how to do these types of problems. Do they actually show up on the subject test? If so, how can I learn do solve them?</p>
<p>One more question: how do the Sparknotes and Barron's tests compare to the real ones? I took a Barron's test and got a 750 (but it was untimed). Thank you for all of your help.</p>