document.write( "Question 84320This question is from textbook elementary algebra
\n" ); document.write( ": When the average daily balance of a customer's checking account falls below $500 in any week, the bank assesses a $5 service charge. The table shows the daily balances of one customer. What must Friday's balance be to avoid the service charge?\r
\n" ); document.write( "\n" ); document.write( "Monday $540.00
\n" ); document.write( "Tuesday $435.50
\n" ); document.write( "Wednesday $345.30
\n" ); document.write( "Thursday $310.00\r
\n" ); document.write( "\n" ); document.write( "Thanks for your help.
\n" ); document.write( "

Algebra.Com's Answer #60743 by tutor_paul(519)\"\" \"About 
You can put this solution on YOUR website!
Another way to think about this question is:
\n" ); document.write( "\"What must Friday's balance be for the average daily balance of the account to be $500/\"\r
\n" ); document.write( "\n" ); document.write( "You can set up the equation like this:\r
\n" ); document.write( "\n" ); document.write( "\"%28540%2B435.5%2B345.3%2B310%2Bx%29%2F5=500\"
\n" ); document.write( "Where x is the Friday balance. Now just solve for x:
\n" ); document.write( "\"%281630.8%2Bx%29%2F5=500\"
\n" ); document.write( "\"1630.8%2Bx=2500\"
\n" ); document.write( "\"highlight%28x=869.20%29\"
\n" ); document.write( "Good Luck,
\n" ); document.write( "tutor_paul@yahoo.com
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