Evaluate the Radical Function at the Given Value of the Variable

question 193

Multiple Choice

Evaluate the radical function at the given value of the variable.
- $$f ( x ) = \sqrt [ 4 ] { x - 20 }$$

• A) \([ 20 , \infty )\)
• B) \([ 0 , \infty )\)
• C) \(( - \infty , \infty )\)
• D) \([ - 20 , \infty )\)

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