SOLUTION: When the average daily balance of a customer checking account falls below $500 in any week the bank access a $5 service charge. What must Friday balance be to avoid the service cha

Question 1128156: When the average daily balance of a customer checking account falls below $500 in any week the bank access a $5 service charge. What must Friday balance be to avoid the service charge.
Monday $540.
Tuesday $455.50
Wed $365.50
Thur $330.
Found 3 solutions by MathLover1, ikleyn, MathTherapy:
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

Monday $
Tuesday $
Wed $
Thur $
Friday $
--------------------------
if the average daily balance of a customer checking account falls $ (means must be less then ), then
$
$
$
$
$

Friday balance must be less than $ to avoid the service charge.

Answer by ikleyn(52788)   (Show Source): You can put this solution on YOUR website!
.

Certainly, the correct answer is

Friday balance must be NOT less than $ to avoid the service charge.

Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

When the average daily balance of a customer checking account falls below $500 in any week the bank access a $5 service charge. What must Friday balance be to avoid the service charge.
Monday $540.
Tuesday $455.50
Wed $365.50
Thur $330.

Correct equation, with B being Friday's balance:
This should give you B, or a Friday balance that is
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