Answer:
-22.7
Step-by-step explanation:
Since the temperature fell, that would means that it's was cooler outside.
Hotter = Temperature goes up
Colder = Temperature goes down
15.7 - 38.4 = -22.7
8,-8
Since,
1)
Differentiating with respect to x,
2)
Differentiating w. r. t x,
3)
Differentiating w. r. t. x,
4)
Differentiating w. r. t. t,
5)
Differentiating w. r. t. p,
6)
7)
Differentiating w. r. t. y,
32