I need help with this pls

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

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.