Answer:
1 possibility is there for the the position of the fourth vertex.
The temperature at 5 am was -3 degrees
12-15=-3
6k+10.5=3k+12
-10.5 -10.5
6k=3k+1.5
-3k -3k
3k=1.5
The longest bolt is 1 4/8 inches, and the shortest bolt is 3/8 inch.
Subtract 3/8 from 1 4/8 to get 1 1/8 inch difference.