A student earned grades of 92, 83, 77, 84, and 82 on her five regular tests. She earned a grade of 95 on her class project, and her homework grade was 77. The five regular tests count for 60% total of the
final grade, and the project counts for 15%, and the homework grade also counts for 15%. If the final
exam counts for 10% of the final grade, what minimum grade on the final will ensure that she gets a
weighted average of at least 80 (B-) for her final weighted mean grade?