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

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter2: Functions And Graphs

Section2.3: Linear Functions And Slope

Problem 106E

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