It looks like there's a table you're referencing, but the formatting seems a bit off. Let’s clarify the data you provided about the cleaning service.
From what I can gather:
- For 10 square feet, it takes 4 minutes.
- For 70 square feet, it takes 48 minutes.
- For 210 square feet, it takes 84 minutes.
If you need help with anything specific regarding this data, such as calculating the cleaning rate, finding a formula, or analyzing the efficiency, please provide more detail!