What is the median for checkers?

With number 11 ( show how you got the answer)

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d