document.write( "Question 996810: A student scored 72 and 89 on her first two quizzes. Write and solve a compound inequality to find the possible values for the third quiz score that would give her an average between 75 and 90, inclusive. \n" ); document.write( "
Algebra.Com's Answer #615101 by fractalier(6550)\"\" \"About 
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The setup for this problem is
\n" ); document.write( "75 < (72+89+x)/3 < 90
\n" ); document.write( "Now multiply everything by three and simplify and get
\n" ); document.write( "225 < 161 + x < 270
\n" ); document.write( "Now subtract 161 and get
\n" ); document.write( "64 < x < 109
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