Marissa's calculus​ course, attendance counts for 5​%of the​ grade, quizzes count for 15​% of the​ grade, exams count for 60​% of the​ grade, and the final exam counts for 20​% of the grade. Marissa had a100​% average for​ attendance,89​% for​ quizzes, 82​% for​ exams, and 81​% on the final. Determine​ Marissa's course average.   Marissa's course average is %?

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