Your averages and values are the following:
test={65, 90}
quizzes={85, 70, 55}
homework ={100, 70, 75, 90, 80, 50, 65}
what grade do you need on the final exam to earn a final grade average of at least 80 using the following grading system?
test average 50%
quiz average 15%
homework 10%
final exam grade 25%