<p>Our end of grade finals are approaching and I need help figuring something out. If I have a 81 in biology and the final counts as 15% of my grade. What would my grade be if I got a 100 or 90 or 80 on the final? Thank you :)</p>
<p>If that 81 counts as the average of all of your marking periods/semesters:</p>
<p>81(0.85)+100(0.15)=83.85
with 90: 82.35
with 80: 80.85</p>
<p>Thank you 
Is that really all?? -_-</p>