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. Suppose that the average of Amy’s chapter tests is 92%. a. 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%.)
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. Suppose that the average of Amy’s chapter tests is 92%. a. 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%.)
Solution Summary: The author calculates the range of marks that Amy needs to score in her final exam to get an A grade.
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. Suppose that the average of Amy’s chapter tests is 92%.
a. 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%.)
A research study in the year 2009 found that there were 2760 coyotes
in a given region. The coyote population declined at a rate of 5.8%
each year.
How many fewer coyotes were there in 2024 than in 2015?
Explain in at least one sentence how you solved the problem. Show
your work. Round your answer to the nearest whole number.
Answer the following questions related to the following matrix
A =
3
³).
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