Toby exercises 14 hours a week. john exercises 20% more than toby and jenny exercises two more hours than john. which expression represents how much jenny exercises in w weeks? a) 13.2w b) 16.8w c) 18.8w d) 19.2w

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:

12.5 feet

step-by-step explanation:

y=sec x is the correct answer

~batmans wife dun dun

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6: 4= 3/2

18: 8= 9/4

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