You post the required initial margin and buy one coffee futures contract for 37,500 pounds of coffee at a futures price of $1.786 per pound. At the close of the trading day, the futures price is $1.785 per pound and your account balance is $3897. You did not receive margin calls and did not add funds during the day. What must be the initial margin requirement, to the nearest dollar?

You post the required initial margin of $3362 per contract and sell 2 copper futures contracts for 25,000 pounds of copper each at a futures price of $3.174 per pound. At the close of the trading day, the futures price is $3.15. What is your account balance at the close of the day? Assume no margin calls.