Your company will replace the asphalt roofs on all the buildings at the factory complex shown below. The buildings have flat roofs. You charge according to the total roof area. What is this
area, in square yards?
35 yd
25 yd
35 yd
20 yd
20 yd
30 yd
30 yd
60 yd
60 yd
25 yd
A. 340
B. 1,500
C. 1,670
D. 2,500

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step-by-step explanation:

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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: