A student has an average of 86% on the unit tests, 85% on the final test, 90% on the class project, and 92% on homework submissions.

If the unit tests count for 25% of the final grade, the final test counts for 40%, the class project counts for 15%, and homework submissions count for 20%, what is the weighted average grade of the student?

• a.)
• 86.4%
• b.)
• 87.4%
• c.)
• 86%
• d.)
• 88%