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If f left parenthesis x right parenthesis equals open parentheses 10 minus x to the power of 7 end exponent close parentheses to the power of 1 divided by 7 end exponent, then f o f left parenthesis x right parenthesis equals

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  1. x to the power of 7 end exponent    
  2. 10    
  3. 10 to the power of 7 end exponent    
  4. x    

    Answer:The correct answer is: x

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