document.write( "Question 265212: A student needs an average of 70 or more to pass a course. He scored 82, 80, and 87 on the first three exams. Write an inequality representing the score she must get on the last test to receive credit for the course.\r
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document.write( "Help! I can't figure this out. \n" );
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Algebra.Com's Answer #195044 by stanbon(75887) ![]() You can put this solution on YOUR website! A student needs an average of 70 or more to pass a course. He scored 82, 80, and 87 on the first three exams. Write an inequality representing the score she must get on the last test to receive credit for the course. \n" ); document.write( "------------------------ \n" ); document.write( "Let the last test score be \"x\". \n" ); document.write( "---- \n" ); document.write( "Equation: \n" ); document.write( "(82+80+87+x)/4 = 70 \n" ); document.write( "249+x = 4*70 \n" ); document.write( "x = 280-249 \n" ); document.write( "x = 31 (score she need on the last test to pass with an average of 70) \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |