Rita earns scores of 87 , 89 , 86 , 88 , and 89 on her five chapter tests for a certain class and a grade of 83 on the class project. The overall average for the course is computed as follows: the average of the five chapter tests makes up 40% of the course grade; the project accounts for 30% of the grade; and the final exam accounts for 30% . What scores can Rita earn on the final exam to earn a "B" in the course if the cut-off for a "B" is an overall score greater than or equal to 80 , but less than 90 ? Assume that 100 is the highest score that can be earned on the final exam and that only whole-number scores are given.
Rita earns scores of 87 , 89 , 86 , 88 , and 89 on her five chapter tests for a certain class and a grade of 83 on the class project. The overall average for the course is computed as follows: the average of the five chapter tests makes up 40% of the course grade; the project accounts for 30% of the grade; and the final exam accounts for 30% . What scores can Rita earn on the final exam to earn a "B" in the course if the cut-off for a "B" is an overall score greater than or equal to 80 , but less than 90 ? Assume that 100 is the highest score that can be earned on the final exam and that only whole-number scores are given.
Chapter7: Systems Of Equations And Inequalities
Section7.2: Systems Of Linear Equations: Three Variables
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Question
Rita earns scores of
87
,
89
,
86
,
88
,
and
89
on her five chapter tests for a certain class and a grade of
83
on the class project. The overall average for the course is computed as follows: the average of the five chapter tests makes up
40%
of the course grade; the project accounts for
30%
of the grade; and the final exam accounts for
30%
. What scores can Rita earn on the final exam to earn a "B" in the course if the cut-off for a "B" is an overall score greater than or equal to
80
, but less than
90
? Assume that
100
is the highest score that can be earned on the final exam and that only whole-number scores are given.
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