oh.. if you didnt fail by much, you could appeal your grade and ask for special consideration.. but you'd need to verify your proof and how it has effected your final outcome...
the pre- req for econ110/111 are:
Admission to BCom/BEc/BAppFin or UAI equivalent to these degrees or admission to BeBus or a GPA of 2.00 with at least 12cp; HSC Mathematics performance band 2 or extension 1 or extension 2, or corequisite of any unit in the range MATH123-MATH136
uh i'm assuming your in commerce/economics/applied finance/ebusiness right? for the math part, did you do math for the HSC? if i remember right, band 2 is above 50% isn't it?
you might be able to get a waiver to do the unit, but i'm not sure if they will let you continue on if you don't have the right math requirements!
does that make sense?? maybe you should ring up and ask..