Final answer:
Alan drives 100 miles per day. To find out how many miles he drives in a week, multiply 100 miles by the 7 days in a week, which equals 700 miles.
Step-by-step explanation:
If Alan drives an average of 100 miles per day, we can calculate the total number of miles he will drive in a week by multiplying 100 miles by 7 days, since there are 7 days in a week.
The calculation would be 100 miles/day × 7 days/week = 700 miles/week. Therefore, Alan will drive 700 miles in a week.