SOMEONE PLEASE HELP ME. ITS URGENT. THANKS

You decide to pay off your seven year car loan in four years. Current balance is $16,5, interest is compounded monthly, what would the new payment need to be to pay of frame? You want to start a Roth IRA to save for retirement. You deposit $1,500 each year into the account. You expect to earn 8.35% interest every year until you retire in 35 years. How much will you have in the account