Question

6: Find the common ratio of the geometric sequence -3, -12, -48, -192, ...

Answer 1

We have that

-3 = -3 * 1 = -3 * 4^0

-12 = -3 * 4 = -3 * 4^1

-48 = -12 * 4 = -3 * 4^2

-192 = -48 *4 + -3 * 4^3

So the ratio is D. 4