Can someone help me please???!

One positive number is 9 more than twice another. if their product is 95, find the numbers

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

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.