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Mathematics 19 Online
OpenStudy (anonymous):

To receive a C grade, a student must average more than 77 but less than or equal to 85. If Claire received a C in the course and had five grades of 74, 85, 75, 65, and 83 before taking the final exam, what were the possible grades for her final if there were 100 points possible? (Assume all six grades are weighted equally and let x represent the unknown score.)

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