Finding the Domain Without the Graph. OK, so suppose we don't have the graph of a function to look at like in the last section... Can we still find the domain and range? So, we'll just be doing domains on these -- which is really where the action is anyway. Asking for the domain of a function is the same as asking. What are all the possible x guys.
1 barrel of crude oil = 42 US gallons (159 liters or 35 imperial gallons). It produces from about 35 percent to 42 percent of gasoline or petrol, plus many other products such as kerosene, etc.
In 2014, about 136.78 billion gallons 1 (or 3.26 billion barrels) of gasoline were consumed 2 in the United States, a daily average of about 374.74 million gallons (or 8.92 million barrels). 3 This was about 4% less than the record high of about 142.35 billion gallons (or 3.39 billion barrels) consumed in 2007.