Ebra
tion
jefferson high school is looking to expand its student parking lot by expanding the existing lot as
shown below.
expanded part of lot
165 ft.
school
300 ft-
75 ft.
x ft.
the size of the new parking lot will be twice the size of the old parking lot. how many feet, x, was the
old parking lot expanded by?

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:

what graph

step-by-step explanation:

table 3 represents a direct variation function. : )