Julian measures the distance he drives to work each day using the odometer on his car, which measures distance in miles, accurate to the nearest tenth of a mile. his drive is in a rural area, with few stops and little traffic, so for the most part, julian can maintain a consistent speed throughout the drive. if the odometer reads 11.7 miles, and it tak approximately 15 minutes, what is julian's average speed on the drive? express your answer using an appropriate level of accuracy