Answer: 
Work Shown:

Therefore -7 goes in the first box, and
goes in the second box.
Answer:
C) $10
Step-by-step explanation:
The answer to this question is C)$10. I know that this is the answer to this question because I was doing it in my math class.
Answer:
h=15
Step-by-step explanation:
subtract 16 from 31
I don't seem to comprehend what you are asking?
Answer:
it would be the 4th one
Step-by-step explanation:
0 would be the flat surface of the earth, but since the hiker is below the 0, it would be a negative 25