In Marissa's calculus course, attendance counts for 10% of the grade, quizzes count for 15% of the grade, exams count for 55% of the grade, and the final exam counts for 20% of the grade. Marissa had a 100% average for attendance, 89% for quizzes, 86% for exams, and 85% on the final. Determine Marissa's course average. Marissa's course average is %. (Type an integer or a decimal. Do not round.)

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