Fixed exchange rates allow countries to formulate their economic policies independent of other nations

The futures price at which you sold 20 futures contracts is $5.00 per bushel. The next day, the futures price drops to $4.80 per bushel. What is the balance in your brokerage account if the initial margin is $2,000 per contract?

A. $20,000 B. -$10,000 C. -$20,000 D. $60,000

Refer to Scenario 1-3. Using marginal analysis terminology, what is another economic term for the incremental revenue received from the sale of the last 400 t-shirts?

A) sales revenue B) marginal revenue C) gross earnings D) gross profit