Question:

What is the domain and range of q(r)=(x-b)^1/2 +6?

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I promise 10 to whoever can show me how to work this or at least explain it. thanks.

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  1. (x-b)^1/2 always >=0 if x >=b

    ( for x<b, we have no real q(x) )

    so the function

    q(x) >=6 while x >=b

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