Final answer:
To calculate how many gallons of gas a car would use, the distance of the trip and the car's fuel economy must be known. Without these details, the answer can’t be determined accurately from the options provided. Typical vehicle consumption would likely not reach 70 gallons for reasonable trip lengths.
Step-by-step explanation:
In order to determine how many gallons of gasoline a car would use on a trip, one needs to know the distance of the trip and the car's fuel economy (miles per gallon or MPG). Without this information, the question cannot be answered accurately. However, based on typical fuel economy and distances traveled, a choice from the given options can be estimated with some examples.
For instance, if the car has a fuel economy of 20 MPG and the trip is 400 miles, the car will use 20 gallons of gas (400 miles / 20 MPG = 20 gallons). In the Check Your Learning provided, a Toyota Prius Hybrid used 59.7 liters (which is roughly 15.8 gallons) for a 1300 km trip. Assuming the distance for the trip in question is similar, none of the options given (20 gallons, 70 gallons, 30 gallons, 49 gallons) seem particularly accurate without the correct distance being provided. A typical vehicle may not require 70 gallons for trips that would be reasonable in length for a passenger car.
Therefore, the final answer to the question depends heavily on additional information about the trip's distance and the vehicle's fuel efficiency.