Pls help. I don't understand

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

Apolynomial has two terms. check all of the factoring methods that should be considered. common factor difference of cubes sum of cubes difference of squares perfect-square trinomial factoring by grouping

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2