document.write( "Question 353124: Michael scored 68, 77, and 98 on three test. He needs to have an average of at least 85. what must he score on the forth test? \n" ); document.write( "

Algebra.Com's Answer #252341 by nerdybill(7384) $\"\"$ $\"About$

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Michael scored 68, 77, and 98 on three test. He needs to have an average of at least 85. what must he score on the forth test?
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\n" ); document.write( "Let x = score on fourth test
\n" ); document.write( "then
\n" ); document.write( "(68+77+98+x)/4 >= 85
\n" ); document.write( "(243+x)/4 >= 85
\n" ); document.write( "243+x >= 340
\n" ); document.write( "x >= 97
\n" ); document.write( ".
\n" ); document.write( "He has to score a 97 or higher.
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