Rosa has $175 in her online music account. Each month she buys $15 worth of new songs. Which inequality could be solved to find the number
of months, x, it will take Rosa to have less than $10 in her online music
account?

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:

good luck on your studies! : )

david edward.

$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.