I would just draw the image flipped. However if you had
Answer:
Answer is -5°C.
Step-by-step explanation:
Initial temperature = 3°C
First decrease in temperature = 5°C
Second decrease in temperature = 3°C
Balloon ascend = 900 ft
Total change in temperature = 3-5-3 = -5
Thus final temperature = -5°C
The greatest possible error is 0.5 feet