Consider a long position of five July wheat contract futures contract each of which covers 5,000 bushels. Assume that the contract price is $2.00 per bushel and that each contract requires an initial margin deposit of $150 and a maintenance margin of $100. Compute the margin balance for this position after a 2-cent decrease in price on Day 1, a l-cent increase in price on Day 2, and a l-cent decrease in price on Day 3.