Answer:
To find each number, subtract 0.7 from the previous number.
19.5, 18.8, 18.1, 17.4, 16.7, 16, 15.3, 14.6, 12.9, 12.2, 11.5, ...
Explanation:
18.8 - 19.5 = -0.7
18.1 - 18.8 = -0.7
17.4 - 18.1 = -0.7
The difference between consecutive numbers is always the same, -0.7.
To find each number, subtract 0.7 from the previous number.
19.5, 18.8, 18.1, 17.4, 16.7, 16, 15.3, 14.6, 12.9, 12.2, 11.5, ...