2. Find the domains of the following functions. Given f(x)=x+7, 9(2)= I) (f+9)(x). II) (9 f)(x)....

  

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2. Find the domains of the following functions. Given f(x)=x+7, 9(2)= I) (f+9)(x). II) (9 f)(x). I 2. Find the domains of the following functions. Given f(x)=x+7, 9(2)= I) (f+9)(x). II) (9 f)(x). I