18,055
-
3,138
———-
14,927
14,927
+
18,055
———-
32,982
Answer:
Delta does not have a relative extreme in the equation, so it is variable y It can not be true
Step-by-step explanation:

There is an answer
The rest of the equation that has no substituted delta is not true, so the prime variables have relative extremes.
12 tons = 24000 because 1 ton = 2000 so then you take 12 * 2000 and get 24000 as you're answer!