Amy Knows from Reading Her Syllabus in Intermediate Algebra That

question 98

Essay

Amy knows from reading her syllabus in intermediate algebra that the average of her chapter tests accounts for 80% (0.8) of her overall course grade. She also knows that the final exam counts as 20% (0.2) of her grade.
a. Suppose that the average of Amy's chapter tests is 97%. Determine the range of grades that she would need on her final exam to get an "A" in the class. (Assume that a grade of "A" is obtained if Amy's overall average is 90% or better.)
b. Determine the range of grades that Amy would need on her final exam to get a "B" in the class. (Assume that a grade of "B" is obtained if Amy's overall average is at least 80% but less than 90%.)

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Definitions:

Long Run

A period in which all factors of production and costs are variable, allowing for full adjustment to changes in economic conditions.

Average Cost

The total cost of production divided by the number of units produced, providing a measure of the cost per unit of output.

Total Costs

The complete sum of all expenses, direct and indirect, incurred in the production of goods or services.

Average-Fixed-Cost Curve

A graph that shows the average fixed costs of production at different levels of output.