Find the least common multiple of each set of number 3,9,and 15

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.

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school