Right away to compare 200 meters to 4 hours

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

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?

Roy has 4 1/2 pizzas for the soccer team to split after the game. if each member is going to get 1/2 of a pizza, how many players are on the soccer team