Question

this image shows how a certain bacteria grows in a petri dish. what is the common ratio of this sequence? 4 3 2 6

Explanation:

Step1: Count bacteria at each stage

Stage 1: $3$, Stage 2: $6$, Stage 3: $12$, Stage 4: $24$

Step2: Calculate common ratio

Common ratio $r = \frac{\text{Next term}}{\text{Previous term}} = \frac{6}{3} = 2$, or $\frac{12}{6}=2$, $\frac{24}{12}=2$

Answer:

2 (Option C. 2)