Me with this, i even got it right but it marked me wrong someone me out

Step-by-step explanation:

We have to re-write the equation and use algebra and solve for s.

This means, we need an expression where it will be "s=SOMETHING".

Lets show the process below:

Now we cross multiply and solve for s:

Note: to get s^2 to s, we take square root and eliminate the square

The formula for "s" is:

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:

step-by-step explanation: