Answer: To determine how many feet of border the doctor's office used each month, we need to divide the total amount of border used throughout the year by the number of months.
Let's assume there are 12 months in a year.
Total feet of border used in a year = 1303 feet
Feet of border used each month = Total feet of border used in a year / Number of months
Feet of border used each month = 1303 feet / 12 months ≈ 108.58 feet (rounded to two decimal places)
Therefore, the doctor's office used approximately 108.58 feet of border each month.