In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Alice has scored 8484, 9494, and 7979 on the first three. What range of scores on the fourth test will give Alice a B for the semester (an average between 8080 and 8989, inclusive)? Assume that all test scores have a non-negative value. Express your answer in interval
In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Alice has scored 8484, 9494, and 7979 on the first three. What range of scores on the fourth test will give Alice a B for the semester (an average between 8080 and 8989, inclusive)? Assume that all test scores have a non-negative value. Express your answer in interval
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter28: Degree Of Precision, Greatest Possible Error, Absolute Error, And Relative Error
Section: Chapter Questions
Problem 52A
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In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Alice has scored 8484, 9494, and 7979 on the first three. What range of scores on the fourth test will give Alice a B for the semester (an average between 8080 and 8989, inclusive)? Assume that all test scores have a non-negative value.
Express your answer in interval notation.
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