Answer:
-0.5 kg
Explanation:
Negative values means the cat's weight decreased from the previous month.
Positive values means the cat's weight increased from the previous month.
We want how much change in the last 3 months cat had gone through. We simply add up the changes.
-0.7 + 0.5 - 0.3 = -0.5
This means the cat's total weight change in 3 months is decrease of 0.5 pounds.
I actually did this right lol