Final answer:
Randy walks a total of 7.2 kilometers to his mailbox and back if he collects his mail 6 days a week for four weeks.
Step-by-step explanation:
Randy uses a pedometer to keep track of the distances he walks each day, and he has discovered that the round trip to his mailbox and back is 300 meters. To calculate the total distance Randy walks to his mailbox and back over the course of 4 weeks, we multiply the daily distance by the number of days he collects mail in a week, and then by the number of weeks.
Firstly, we calculate the weekly distance: 300 meters/day × 6 days/week = 1800 meters/week.
Then, we calculate the total distance over 4 weeks: 1800 meters/week × 4 weeks = 7200 meters.
Now, since 1 kilometer is equivalent to 1000 meters, we can convert the total distance from meters to kilometers:
7200 meters ÷ 1000 meters/kilometer = 7.2 kilometers.
Therefore, Randy walks a total of 7.2 kilometers to his mailbox and back if he collects his mail 6 days a week for 4 weeks.