Lin has a small baking pan She lines the bottom of her pan with aluminum foil. The area of the rectangular piece of toil is 8 1/2 square inches. Its length is 3 1/2
3 inches. What is the width of the foil?

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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c - they will have the same distribution

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this is the only one that could make sense. : )

the probability that a bird is green (.30) is true

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