document.write( "Question 1121565: The average grade of Folly in his 6 subjects is 83.45. What grade must he have in his 7th subject so that he will have the average of 85? Thank you \n" ); document.write( "
Algebra.Com's Answer #737503 by MathTherapy(10557)\"\" \"About 
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\n" ); document.write( "The average grade of Folly in his 6 subjects is 83.45. What grade must he have in his 7th subject so that he will have the average of 85? Thank you
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\"matrix%281%2C3%2C+%286%2883.45%29+%2B+S%29%2F7%2C+%22=%22%2C+85%29\"
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document.write( "Solve for S, the 7th-subject score to get your answer. \n" );
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