document.write( "Question 946875: Sean has taken three exams and earned scores of 85, 72, and 77 out of a possible 100 points. He needs an average of at least 80 to earn a B in the course. What range of scores on the fourth (and last) 100 point test will guarantee a B in the course? \n" ); document.write( "

Algebra.Com's Answer #577673 by Fombitz(32388) $\"\"$ $\"About$

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I assume the range for B is [80,90)
\n" ); document.write( " $\"80%3C=%2885%2B72%2B77%2BT%29%2F4%3C90\"$
\n" ); document.write( " $\"320%3C=234%2BT%3C360\"$
\n" ); document.write( " $\"86%3C=T%3C126\"$
\n" ); document.write( "He needs at least an 86 to get a B.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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