<PRE><B>Question 927848</B>
((92+83+77+84+82)/5)*0.60 + 88*0.10 + 95*0.15 + 77*0.15 = 84.76
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weighted mean grade:
85
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as for the final letter-grade, that depends on the number-grade range for each letter-grade, but those ranges were not given in the problem statement.
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Solve and graph linear equations:
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Solve quadratic equations, quadratic formula:
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Convert fractions, decimals, and percents:
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Calculate and graph the linear regression of any data set:
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