document.write( "Question 1143001: Lucy scored a 85, 64 and 76 On her math exams . What score must Lucy obtain on the next math test to have an average of exactly 80?
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document.write( "A)93
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document.write( "B) 97
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document.write( "C)94
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document.write( "D)95 \n" );
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Algebra.Com's Answer #763749 by math_helper(2461)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "(85+64+76+x)/4 = 80 \r \n" ); document.write( "\n" ); document.write( "Solve for x: \n" ); document.write( "(225+x) = 320 \n" ); document.write( " x = 320-225 \n" ); document.write( " x = 95 \r \n" ); document.write( "\n" ); document.write( "Lucy must score a \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |