Factoring polynomial. is there a gcf? do number 1

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

Identify the number 127 as a rational or irrational. explain