document.write( "Question 210199This question is from textbook
\n" ); document.write( ": I do not understand how to set up this problem.\r
\n" ); document.write( "\n" ); document.write( "Your quiz grades are 73,75,89,and 91. What is the lowest grade you can obtain on the last quiz and still achieve an average of at least 85? \n" ); document.write( "
Algebra.Com's Answer #158834 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Your quiz grades are 73,75,89,and 91. What is the lowest grade you can obtain on the last quiz and still achieve an average of at least 85?
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\n" ); document.write( "Let the grade you need be \"x\":
\n" ); document.write( "Equation:
\n" ); document.write( "The average of the 5 grades must be 85:
\n" ); document.write( "73+75+89+91+x = 5*85
\n" ); document.write( "x = 425-(73+75+89+91)
\n" ); document.write( "x = 97 (Lowest grade on last quiz to achieve
\n" ); document.write( "an average of at least 85)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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