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Mathematics, 27.08.2019 02:00 zitterkoph

There are three exams in a marking period. a student received grades of 75 and 81 on the
first two exams. what is the minimum grade the student can earn on the last exam to get
an average of no less than 80 for the marking period?
solve the inequality.

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There are three exams in a marking period. a student received grades of 75 and 81 on the
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