Answer:
18
Step-by-step explanation:
From the instructions i gather it might be like this
The answer is a=6, b=4, and 0=3 you can always try to find the answer in google though
Hope that helped
I SPEAK ENGLISH SIR umm pipi è presa a um fio
from x15 to x 25 is 4 - -16 = -20 degree change
25 -15 = 10000 feet
-20/10 = -2 degrees every 1000 feet