Which relations are functions? Choose all answers that are correct.
{(-5, 3), (-2, 3), (-1, 8), (0, 0);
{(-6, 0), (-4, 0), (9,0), (15, 0)}
{(-10, 7), (-3, 1), (-3,0), (4, -9)}
(((
{(0, 0), (2, 2), (3, 3), (7, 7)}

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