It's B, because of the definition of a function.
Answer: 
Step-by-step explanation:
Given
Andy wants to turn
on his skateboard
Currently, he can make a turn of 
The difference between the required and current turn degree meets his goal i.e.

Thus, he needs to turn by
to meet his goal

Regardless of the sign of

, we have

(never negative). But multiplying by -1 makes it negative.
On the other hand,

which can never be negative for real

.
Answer:

Step-by-step explanation:

Expand brackets

Final Answer is

3,059 I don’t really care