At a given time, Saturn was 9.1 x 10^8 miles from the sun and earth was 9.3 x 10^7 miles from the sun. By what distance is one planet closer to the sun than the other planet? A. 2 x 10^1
B. 2 x 10^5
C. 8.17 x 10^7
D. 8.17 x 10^8

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:

i'm sorry mate, but i am not seeing any figures. i am unable to solve this for you.