: ExxonMobil is evaluating the costs of expanding an oil refinery. The fixed expansion costs are $150,000,000, and the variable costs are $10 per barrel refined. ExxonMobil expects to refine 20,000,000 barrels in the first year. Additionally, environmental compliance costs are projected to be $10,000,000.

Requirements:

1. Calculate the total expansion and compliance costs.
2. Determine the cost per barrel refined.
3. Analyze the impact of refining an additional 5,000,000 barrels on total and per-barrel costs.
4. Discuss the significance of managing environmental compliance costs.
5. Recommend strategies for cost control in refinery operations.