Nancy already owns 2 stuffed animals, and additional stuffed animals are priced at 0.6 per
dollar. How much money does Nancy need to spend on new stuffed animals in order to have
a total of 5 stuffed animals in her collection? solve

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

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hiking down a winding trail.

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191 students play sports and ninety-seven 10th graders were surveyed.

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