Answer:
1
Step-by-step explanation:
Well you could use the exponential identity that:
To determine: 
Which means that it's equal to: 
and since anything to the power of 0 (except 0) is equal to 1, then the value is 1.
But you can also just see that the numerator and denominator are the same exact value, and since dividing something by it self, results in 1, the answer must be 1, which is kind of a proof as to why h^0 = 1.
Answer:
a
Step-by-step explanation:
Exchange rates help you know how much your currency is worth in a foreign currency.
Its true you are doing it to both side. If you only one side, then the inequality would not be true. Subtract is like adding the negative . number, so you still would have to do it to both side of the inequality so the inequality is true,