document.write( "Question 750892: What does Emma need to make on her final exam (20%) of her grade to keep her current average (93) to at least a 90 (a-) average \n" ); document.write( "

Algebra.Com's Answer #456895 by Edwin McCravy(20055) $\"\"$ $\"About$

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What does Emma need to make on her final exam (20%) of her grade to keep her current average (93) to at least a 90 (a-) average
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document.write( "20% of X + 80% of 93 >= 90\r\n" );
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document.write( "    .2X + .8(93) >= 90\r\n" );
document.write( "      .2X + 74.4 >= 90\r\n" );
document.write( "             .2X >= 15.6\r\n" );
document.write( "               X >= \r\n" );
document.write( "               X >= 78\r\n" );
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document.write( "She needs to make at least 78.\r\n" );
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document.write( "Edwin

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