guyys i did my AS exam and i ended up with a D in math and 2E's in bio and chem wat should i do?? wats the next step? should i retake?? and on which exam may/june 2012 or on oct/nov 2011 and i really got diappointed with my bio grade as i thought i would get A should i go for a rechek and how much does it cost?? will i be able to get accepted in any uni + with my nxt year AL grades?? and if any1 could give me notes for maths + chem + bio and thnx slot in advance