Is the sequence geometric? If so, identify the common ratio.
6, 12, 24, 48,...
a. yes; 2
b. yes; -2
c. yes; 4
d. no
Yes, the sequence is geometric. The common ratio is 2.
To see this, notice that each term is obtained by multiplying the previous term by 2. For example, 12 = 6 * 2, 24 = 12 * 2, and so on. Therefore, the common ratio is 2.
So the correct option is a. yes; 2