The answer is ae=12 that what i got right on my test
Answer:
-6 2/3
Step-by-step explanation:
The function is constant when the line is horizontal. The values are from 0 to 3.
Answer:

Option (A) is the correct answer.
Step-by-step explanation:

Now, 

∴ 
= 
= 
= 
Therefore option (a) is the correct answer.