The answer is 6 square inches
I think it is non-statistical as it has only one possible answer
The second one because 5.40 is less than 5.71
Answer: After 8 hours the pressure will be at -60?
Explanation: not sure how the balloon can reach -60 kilopascals but 15% of 300 is 45 and 45 x 8(hours) is 360. 300 - 360 is -60