Answer:
If we put x=2 in the given equation, we get the answer for the equation as 2
Given:

To find:
Why the answer is 2
Solution:
If we substitute the value x=2 in the given option, we get



Result:
Thus we can say that when substitute the value of x=2
We get the answer as 
The formula for this is A= a + b/2 x h.
Answer:
h
Step-by-step explanation:
h
Answer:
C. 3,960
Step-by-step explanation:
∆ADB ~ ∆EDC. Therefore,

(substitution)
Solve for x
Cross multiply
5x - 3x = 7,920
2x = 7,920
x = 7,920/2
x = 3,960 meters