THINKING: amp
1. The average depth of water at the end of a dock is 6 feet. This varies 2 feet in both directions with the tide.
Suppose there is a high tide at 12 AM and the tide goes from low to high every 6 hours.
a starting point
a) Write a an equation for function d(t) describing the depth of the water as a function of time with t = 0
corresponding to 12 AM and provide a sketch of the graph of d(t).
ral

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)

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the naturalist literary movement was an extension of the realist literary movement, a movement that strove to portray life as it really was hope it

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answer: i don't understand. what are the options

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3.how is solving radical equations different than solving linear equations?

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