Which survey is most likely affected by bias

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.