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Question

In​ Marissa's calculus​ course, attendance counts for 20% of the​ grade, quizzes count for 20% of the​ grade, exams count for 45% of the​ grade, and the final counts for 15% of the grade. Marissa had a 100​% average for​ attendance, 89 % for​ quizzes, 86​% for​ exams, and 81% on the final. Determine​ Marissa's course average.

Answer 1

Convert the percents to decimals.

Multiply the grade weight (how much each criteria is worth, for instance 20% or 0.20 for attendance) with the score for that item (example for attendance: (0.20)(1.00)

Then add them all up. Example (0.20)(1.00) + (0.20)(0.89) + . . .