Sonja's credit card has an apr of 21%, calculated on the previous monthly
balance, and a minimum payment of 2%, starting the month after the first
purchase. her credit card record for the last 7 months is shown in the table
below.
end of
month
principal
paid
previous
balance
$0.00
$700.00
5698.25
$696.50
5694.76
5693.03
$691.29
new
charges
$700.00
$0.00
$0.00
$0.00
payment
received
$0.00
$14.00
$13.97
$13.93
$13.90
$13.86
$13.83
finance
charges
$0.00
$12.25
$12. 22
$12.19
$12.16
$12.13
$12.10
$0.00
$1.75
$1.75
$1.74
$1.74
$1.73
$1.73
new
balance
$700.00
$698.25
$696.50
$694.76
$693.03
$691 29
$689.57
$0.00
$0.00
50.00
about what percentage of sonja's payments so far have gone to paying
interest?