SOLUTION: Find the domain of f (x) = 7 + 3x + 21 , and express it using interval notation.

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Question 90026: Find the domain of f (x) = 7 + 3x + 21 , and express it using interval
notation.
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
f (x) = 7 + 3x + 21
Domain is any real number. Beacause, you can plug-in any number (zero, negative or positive) and you will still get a real number.
(+infinity , -infinity)