4. Nico Joven presently earns $348.40 per week. He claims himself and his mother as allowances. He is single. He is to get a new job classification, which will result in a 15% increase in pay. He also plans to marry. After his marriage, he will claim his wife, himself, and his mother as allowances. How much less will be withheld weekly for federal income tax?​

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)

step-by-step explanation:

1 + (6 / x - 1)

step-by-step explanation:

divide using polynomial division.