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To earn an A- in a course, you must have a final average of at least 90%. On the first four exams, you have the grades of 86%, 88%, 92%, and 84%. If the final exam counts for two grades, what must you get on the final in order to get an A- in the course?

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To earn an A- in a course, you must have a final average of at least 90%. On the first four exams, you have the grades of 86%, 88%, ...

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