document.write( "Question 675539: A student scores an 84, 85, and 88 on her first three exams. What must she score on her fourth exam to raise her average to 89? \n" ); document.write( "
Algebra.Com's Answer #419911 by ReadingBoosters(3246)\"\" \"About 
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\"%2884%2B85%2B88%2Bx%29%2F4+=+89\"
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\n" ); document.write( "\"%28257%2Bx%29%2F4+=+89\"
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\n" ); document.write( "Multiply both sides by 4
\n" ); document.write( "257+x = 89(4)
\n" ); document.write( "x = 356 - 257
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