Write your answer in simplest radical form​

Which of the following questions is a statistical question? (2 points) how many professional sport leagues are there? where do the professional sport leagues play? how many hours of professional training took place over the weekend? how many hours do you spend each week training for a sports league?

Me ! write an equation for the interior angles of this triangle that uses the triangle sum theorem

What is the 12th term of b(n)=-4-2(n-1)