document.write( "Question 839962: Kerry has 1st, 2nd, and 3rd quarter grades of 83,92 and 88. What does Kerry need to get for her fourth quarter grade so that her overall average is a 90? \n" ); document.write( "
Algebra.Com's Answer #505893 by rfer(16322)\"\" \"About 
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(83+92+88+x)/4=90
\n" ); document.write( "263+x=90*4
\n" ); document.write( "x=360-263
\n" ); document.write( "x=97
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