Derek decides to buy a new car. The dealership offers him a choice of paying $547.00 per month for 5 years (with the first payment due next month) or paying some $28,841.00 today. He can borrow money from his bank to buy the car. What interest rate makes him indifferent between the two options? Answer format: Percentage Round to: 3 decimal places (Exampla: 9.243%, \% sign required. WW accept decimat format rounded to 5 decimal places (ex: 0.09243)) Derek wants to witharaw $12,687.00 from his account 7.00 years from today and $13,340.00 from his account 13.00 years from today. He cumently has $2.236.00 in the account. How much must he deposit ench yoar for the noxt 13.0 years? Assume a 6.15% interest rate. His account must equal zero by year 13.0 but may be negative prior to that