I'm currently at the time of posting this is taking a test & I need help but my teacher won't help me or anyone. So I need help with this question and need an answer. The manager of a company made the graph below to show the value of a piece of office equipment after each of the 7 years following its purchase. The manager plans to choose two points to draw a line of best fit. Which two points provide the BEST line of fit? A. (3, 7) and (7, 1) B. (3, 7) and (4, 4) C. (1, 7) and (7, 0) D. (1, 7) and (6, 2)

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:

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7