Answer:
The correct choice is

Step-by-step explanation:
The given equation is

We rewrite the left hand side of the equation as a power(a number to a given exponent.

Recall that;

We apply this property to obtain;

Since the exponents are the same, the bases are also the same.
Therefore 
Answer:
-250
Step-by-step explanation:
I don't know for sure but I hope it's correct.
Answer:
0 degrees
Step-by-step explanation: