document.write( "Question 636794: Christina had scores of 78%, 87%, 67%, and 79%. What must she score on the fifth test (100 pt) to average at least 80%? \n" ); document.write( "

Algebra.Com's Answer #401223 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "(78 + 87 + 67 + 79 + x)/5    ≥  80
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document.write( "  78 + 87 + 67 + 79 + x   ≥  400    | Solve for x \n" );
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