Select the correct answer from each drop-down menu. Gilbert is training for a bike race. As part of his training, he does practice rides on portions of the actual race course. Gilbert's first practice ride covers 5 miles of the course, and his second practice ride covers 9 miles of the course. Between these practice rides, he increases his average speed by 2 miles/hour. These functions model the time it took Gilbert to do each practice ride, where x is his speed during the first practice ride. Practice Ride 1: (5/x) hours. Practice Ride 2: (9/(x+2)) hours. The denominator of the function that models practice ride 2 represents the
1) increase in speed
2) total distance covered
3) increase in time
4) total time taken