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Example 6 Course Grades Chapter 2.4 A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what.

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Presentation on theme: "Example 6 Course Grades Chapter 2.4 A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what."— Presentation transcript:

1 example 6 Course Grades Chapter 2.4 A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)?  2009 PBLPathways

2 A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)?

3  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test. Average is

4  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test. Average is

5  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test. Average is

6  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test. Average is

7  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test. Average is

8  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test. Average is

9  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test.

10  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test.

11  2009 PBLPathways A student has taken four tests and has earned grades of 90%, 88%, 93%, and 85%. If all 5 tests count the same, what grade must the student earn on the final test so that his course average is a B (that is, so his average is at least 80% and less than 90%)? Let x be the score on the final test


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