row 1 date billed
row 2 dollar amount
row 3 dollar amount past 30 days
Row 4 dollar past 60 days
Row 5 Dollar past 90 days
=if( row 1 is less then 30 days) show row 2
=if( row 1 is less then 60 days but greater then 30 days) show row 2
=if( row 1 is less then 90 days but greater then 60 days) show row 2
=if( row 1 is greater then 90) show row 2