You manage a warehouse and need to replace a forklift. a local retailer sells the model you want for $1,299 plus a 6% sales tax. a store located just over the state line sells the same model for $1,359 plus a 4% sales tax. what is the final cost of the less expensive option? $1,350.96 $1,376.94 $1,413.36 $1,902.60 $2,078.40

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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its 8

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answer: list the statements and i will follow up!

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