Final answer:
To calculate the price of 1 m³ of fuel oil at 80 cents / Liter, multiply the price per liter by the conversion factor. To calculate the price of 1400 L of fuel at 0.70 € / L, multiply the number of liters by the price per liter.
Step-by-step explanation:
To calculate the price of 1 m³ of fuel oil at 80 cents / Liter, we need to convert the price from cents to dollars and from liters to cubic meters.
1 m³ = 1000 L, so the price of 1 m³ of fuel oil is $800.
For the second question, to calculate the price of 1400 L of fuel at 0.70 € / L, we multiply the number of liters by the price per liter: 1400 * 0.70 = €980. Therefore, the answer is option a) €980.