Because a competitive firm's marginal revenue is equal to the market price, the competitive firm's demand curve, which is just a horizontal line at the market price, is also the firm's marginal revenue curve.ecause a competitive firm's marginal revenue is equal to the market price, the competitive firm's demand curve, which is just a horizontal line at the market price, is also the firm's marginal revenue curve.
Quick Answer. Natural gas is measured in cubic feet, cubic meters, British thermal units or joules, while gasoline is measured in gallons, British thermal units, joules or metric tons. The unit used to measure gas is dependent upon the situation in which the gas is being used.
Depending on the marketplace, the price of natural gas is expressed in US dollars (or other currency) per 1 million British thermal units (MMBtu), million cubic feet (Mcf), or 1,000 cubic meters.