please answer both questions, thank you

Daphne decides to buy a new car. The dealership offers her a choice of paying $511 per month for 5 years (with the first payment due next month) or paying $28,303 today. She can borrow money from her bank to buy the car. What stated annual interest rate makes her indifferent between the two options? 0 12 2.40 - 0 21 3.19 3) 3.98 34) 4.65 5) 5.41 Marvin is 25 and plans to retire on his 65th birthday. However, he plans to work part-time until he turns 72. During these years of part-time work, he will neither make deposits to nor take withdrawals from his retirement account. He will fully retire on his 72nd birthday at which time he wants to have $3,250,000 in his retirement account. He will make contributions to his retirement account from his 26th birthday to his 65th birthday. To reach his goal, his contributions must be $ . Assume an 8.20% interest rate. 1) 6,652.12 2) 6,770.35 (3) 6,854.71 - 4) 6,939.08 5) 7,129.73