Answer: 6.5 miles per day
Explanation:
First and foremost, we should note that 7 days = 1 week. Therefore, from the question, we are given the information that it took took 1 week to hike the 45.5 miles over the Brooks Range.
The average number of miles per day that they traveled will then be:
= 45.5 miles / 1 week
= 45.5 miles / 7 days
= 45.5/7
= 6.5 miles per day