Answer:
28 miles
Explanation:
Distance from delivery center to first delivery: 5.5 miles
Distance from the first delivery to the second delivery: 8.5 miles
Total distance to reach the second delivery: 5.5 miles + 8.5 miles = 14 miles
Total distance to return: 14 miles
Total distance traveled = 14 miles + 14 miles = 28 miles
Answer: 28 miles