document.write( "Question 770422: Joe scored 85, 89, 86, and 93 on the first 4 testsin math. what must he score to average 90 \n" ); document.write( "
Algebra.Com's Answer #469516 by tommyt3rd(5050)\"\" \"About 
You can put this solution on YOUR website!
if you mean that he will take one more test, and all the tests have the same weight then...\r
\n" ); document.write( "\n" ); document.write( "(85+89+86+93+x)/5=90\r
\n" ); document.write( "\n" ); document.write( "x+353=450\r
\n" ); document.write( "\n" ); document.write( "x= 97\r
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