Final answer:
With a fuel efficiency of 21 miles per gallon and a 12-gallon tank, the car can travel a total distance of 252 miles, which is more than enough to cover the 202.4-mile trip.
Step-by-step explanation:
To determine how many miles you can travel with the gasoline you have, you need to use the car's fuel efficiency rate. In this case, the car holds 21 miles per gallon. With a full tank of 12 gallons, you can calculate the total distance the car can travel on a full tank by multiplying the number of gallons by the miles per gallon:
21 miles/gallon x 12 gallons = 252 miles.
Therefore, with a full tank of gas, the car can travel up to 252 miles. Since you are driving 202.4 miles, you will have enough fuel to complete your trip and still have gas left over.