g an investor in the futures market enters into a short wheat futures contract on may 6. the expiration of the contract is august 6 and it is for the delivery of 1,000 bushels of wheat. the initial margin for the contract is $7,500 and the maintenance margin is $6,500. the contract will be marked to market on a monthly basis. listed below are the contract delivery prices (in dollars per bushel) on each settlement date. what numbers would you fill in for the row of jul 6th? state the price change adjustment, adjusted margin balance, margin call and ending balance of margin.