The answer is a words per minute, because the independent quantity is the words
Answer: Choice A
![\sqrt[4]{3^3}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B3%5E3%7D)
The fourth root of 3^3
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Explanation:
The exponent of 1/4 means "fourth root", so,
![3^{1/4} = \sqrt[4]{3}](https://tex.z-dn.net/?f=3%5E%7B1%2F4%7D%20%3D%20%5Csqrt%5B4%5D%7B3%7D)
The outer exponent 3 can be moved inward like this

Then we can use the rule
![x^{m/n} = \sqrt[n]{x^m}](https://tex.z-dn.net/?f=x%5E%7Bm%2Fn%7D%20%3D%20%5Csqrt%5Bn%5D%7Bx%5Em%7D)
This means
![3^{3/4} = \sqrt[4]{3^3}](https://tex.z-dn.net/?f=3%5E%7B3%2F4%7D%20%3D%20%5Csqrt%5B4%5D%7B3%5E3%7D)