document.write( "Question 171643This question is from textbook
\n" ); document.write( ": Please double check my work\r
\n" ); document.write( "\n" ); document.write( "Bill needs an average of 80 on four tests in science to make the honor roll. What is the lowest score he can receive on hte fourth test if his first three scores are 73, 96, and 89?\r
\n" ); document.write( "\n" ); document.write( "I added 73+96+89 = 258\r
\n" ); document.write( "\n" ); document.write( "then I divided 258/3 and came up with the answer of 86\r
\n" ); document.write( "\n" ); document.write( "86 is the lowest grade he can make\r
\n" ); document.write( "\n" ); document.write( "did I do this right? \n" ); document.write( "

Algebra.Com's Answer #126777 by nerdybill(7384) $\"\"$ $\"About$

You can put this solution on YOUR website!
You did NOT consider the fourth test!
\n" ); document.write( ".
\n" ); document.write( "Goal average 80 on four tests
\n" ); document.write( "Let x = grade on fourth test
\n" ); document.write( "total on last three tests
\n" ); document.write( "73+96+89 = 258
\n" ); document.write( ".
\n" ); document.write( "(258+x)/4 >= 80
\n" ); document.write( "258+x >= 320
\n" ); document.write( "x >= 62
\n" ); document.write( ".
\n" ); document.write( "He has to get a grade equal or greater than 62
\n" ); document.write( " \n" ); document.write( "

\n" );