Cancelling Sat Subject Tests?

<p>I signed up for three; Spanish, Math 2, and Literature. I only signed up because I though I needed them to apply to Boston University. It turns out, for my school of choice (Sargent), they aren't required, unless I'm missing something. I have a Barron's Math 2 book and am really struggling with the concepts (I know I'll be fine with lit and spanish). Can I cancel all three tests, and get my money back? I'd really rather not waste money on I test that will be useless to me, plus my math score wouldn't be so great either.</p>