-)J. Balvin . Si Tu Novio Te x n Time-Downlo). Chegg Study I Guided Sc x ( conne

Question

-)J. Balvin . Si Tu Novio Te x n Time-Downlo). Chegg Study I Guided Sc x ( connectmath.com/alekscgi/x/Islexe/1o, u-IgNslkr 78P3jH-1Q1HXBxM9hozYUzCiw4JlkPXwidPMfFrdQ2a REFERENC h MATH 1314 Fall 2017-12345 MATH ste by ALEKS Corp Quiz 1 Sections 1.4-1.7 Previous 12 34 5 6 7 89 10 Next Question 10 of 10 (1 point) Trent earns scores of 66, 86, and 80 on three chapter tests for a certain class. His homework grade is 69 and his grade for a class project is 67. The overall average for the course is computed as follows: the average of the three chapter tests makes up 50% of the course grade; homework accounts for 20% of the grade; the project accounts for 20%; and the final exam accounts for 10%. What scores can Trent earn on the final exam to pass the course if he needs a "C", or better? A C" or better requires an overall score of 70 or better, and 100 is the highest score that can be earned on the final exam. Assume that only whole-number scores are given. To obtain a "C" or better, Trent needs to score between and], inclusive

Explanation / Answer

average of 3 tests = 66 + 86 + 80 / 3 = 77.33

setting up the equation

70 <=.5 ( 77.33) + .2 (69 ) + .2 ( 67 ) + .1 (x) <= 100

70 <= 65.865 +0.1x < =100

4.135 <= 0.1x< = 34.135

41.13<= x <= 341.135

41.25 <= x <= 341.35

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