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.
Well, one barrel of crude produces 19.5 gal of gasoline plus 22.7 gallons of other petroleum products (or 2.2 gallons more than the original 42 gallons. So, 1MM/19.5=51,282 barrels of oil needed to produce 1MM gallons of gasoline plus 1.16MM gallons of other petroleum products.