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.
For 2011, projected use was 142 billion gallons (9.12 million barrels a day). The U.S consumed about 64.3 billion gallons of finished motor gasoline in 2008. There are approximately 43 gallons of motor gasoline per barrel (and 19.6 gallons can be refined from each barrel of crude oil). This statistic does not include other distillates such as jet fuel and heating oil.