3 .6
6 1.2
9 1.8
12 2.4
The pattern in this sequence is that each number is 0.6 more than the previous number. This means that each number is obtained by adding 0.6 to the previous number.
So, continuing the sequence:
15 3.0
18 3.6
6 1.2
9 1.8
12 2.4
So, continuing the sequence:
15 3.0
18 3.6