A mine extracts 2 metric tons of coal in an hour. The mine uses 14 ton of the extracted coal every hour to generate electricity for the mine and sells the rest. If t is the number of hours spent mining, which expression represents the amount of ore sold? How much ore can the mine sell after extracting ore for 12 hours?
The expression is 2t−1/4t. The amount of ore is 23 3/4 metric tons.
The expression is 2t−1/4t. The amount of ore is 21 metric tons.
The expression is 2t+1/4t. The amount of ore is 24 metric tons.
The expression is 2t+1/4t. The amount of ore is 24 1/4 metric tons.