Final answer:
The provided graph data does not specify which, if any, of the prices per gallon correspond to premium gasoline, thus we are unable to determine the unit price for premium gasoline from the given information.
Step-by-step explanation:
To find the unit price of premium gasoline based on the given graph, we need to divide the total cost by the total amount of gasoline. In this case, the total cost and total amount of gasoline are given for each data point on the graph. Let's calculate the unit price for the last data point:
Total cost = $2.20 per gallon x 720 million gallons = $1,584 million
Unit price = Total cost / Total amount of gasoline = $1,584 million / 720 million gallons = $2.20 per gallon
Therefore, the unit price of premium gasoline is $2.20 per gallon based on the given graph.
To determine the unit price of premium gasoline based on the given graph, we need information that provides the price per gallon at a specific volume. However, the data points provided in the question do not directly give us the unit price of premium gasoline; instead, they present various prices per gallon at different total volumes, but none of these data points are labeled as 'premium.' Therefore, we cannot determine the unit price of premium gasoline without more specific information about which of these amounts—if any—correspond to the premium gasoline.