document.write( "Question 604441: a professor grades students on three test, four quizzes, and a final exam. Each test counts as two quizzes and the final exam counts as two tests. Sara has test scores of 85,75,and 90. quiz scores are 96,88,60, and 76. her final exam score is 85. use the weighted mean formula to find Sara's average for the course. \n" ); document.write( "
Algebra.Com's Answer #381217 by alicealc(293)\"\" \"About 
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total score = (85 + 75 + 90)*2 + (96 + 88 + 60 + 76) + 85*2*2
\n" ); document.write( "total score = 250*2 + 320 + 340 = 500 + 320 + 340 = 1160\r
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\n" ); document.write( "\n" ); document.write( "average = 1160/(3*2 + 4 + 1*2*2) = 1160/(6 + 4 + 4) = 1160/14 = 82.8571 = 83\r
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\n" ); document.write( "\n" ); document.write( "so, Sara's average score is 83\r
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