Help, with this math question please :)

answer choices are shown in the photo

A. 3 * 10^4

Step-by-step explanation:

9 * 10^7

3 * 10^3

9 is 3 times 3, so there is 3

10^7 is 10^4 times 10^3, so there is 10^4

So it is 3 * 10^4

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:

is there a picture

step-by-step explanation: