Shelby purchased ski equipment for $827 using a six-month deferred payment plan. the interest rate after the introductory period is 13.87%. a down payment of $190 is required as well as a minimum monthly payment of $85. what is the balance at the beginning of the seventh month if only the minimum payment is made during the introductory period? (2 points) $682.47 $172.47 $597.47 $186.04