Question

3.25, 3.0, 2.75, 2.5, 2.25, ...

Answer 1

3.25 - 3 = 0.25
3 - 2.75 = 0.25
2.75 - 2.5 = 0.25
2.5 - 2.25 = 0.25

Since we subtracted those numbers, it means we are decreasing.
Therefore, the answer is decrease by 0.25.

Answer 2

You are decreasing by 0.25 . Each time you are subtracting only .25 to each number . +<span />