Simplify the following

Recall the definition of a polynomial expression. find two polynomial expressions whose quotient, when simplified,is. use that division problem to determine whether polynomials are closed under division. then describe how theother three operations-addition, subtraction, and multiplication-are different from division of polynomials.

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

The graph shown is the graph of which function?