Show me how to do this, i need to show work

x ≈ 11.68 ( to 2 dec. places )

Step-by-step explanation:

Given

= 730 ( take log of both sides )

log = log730

(x - 8)log6 = log730 ( divide both sides by log6 )

x - 8 = ≈ 3.68 ( add 8 to both sides )

x ≈ 11.68 ( to 2 dec. places )

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:

answer:

c. the third graph