Solve the Problem. -A Student Earned Grades of 84, 78, 84, and 72

question 4

Multiple Choice

Solve the problem.
-A student earned grades of 84, 78, 84, and 72 on her four regular tests. She earned a grade of 78 on the final exam and 86 on her class projects. Her combined homework grade was 87. The four regular tests count for 40%
Of the final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%.
What is her weighted mean grade? Round to one decimal place.

• A) 80.2
• B) 81.3
• C) 81.2
• D) 82.1

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Definitions:

Learning Curve

A graphical representation that shows how the ability to perform a task, usually measured by time or efficiency, improves over time with practice.

Logarithmic Approach

A mathematical method that uses logarithms to solve problems or model situations, often to simplify multiplicative processes into additive ones.

Labour Bill

An itemized statement or listing of the labor costs associated with a project, often used in construction and services industries.

Logarithmic Approach

A method that uses logarithmic functions to transform nonlinear relationships into linear ones for easier analysis.