1. - 4 =
=> x = - 36
___________
2. -18 = 6t
=> t =
=> t = -3
3. x - 18 = -72
=> x = - 72 + 18
=> x = - 54
4. -18 = x - 15
=> x = -18 + 15
=> x - 3
Answer
-4,000
Step-by-step explanation:
Just subtract 35,000 and 31,000 or 27,000 and 21,000 and get 4,000. Since the altitude is going down, it'll be negative.