Mathematics, 18.10.2021 23:10 droid5004
In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Charles has scored 93, 82, and 87 on the first three. What range of scores on the fourth test will give Charles a C for the semester (an average between 70 and 79
, inclusive)? Assume that all test scores have a non-negative value.
Express your answer in interval notation.
Answers: 2
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