document.write( "Question 654044: Shelby made a list of her test scores: 88,100,92,80,85,94,90. What is the lowest score she can get on her next test to have a mean score of 90? \n" ); document.write( "
Algebra.Com's Answer #408593 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! (88+100+92+80+85+94+90+x)/8 = 90\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(629+x)/8 = 90\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "629+x = 90*8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "629+x = 720\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 720-629\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 91\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the lowest score she can get is 91 \n" ); document.write( " |