SOLUTION: Find the domain of f(x)=7+sqrt3x+21 and express it using interval notation.

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Question 53171: Find the domain of f(x)=7+sqrt3x+21 and express it using interval notation.
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!

f(x)=7+sqrt3x+21 anFind the domain of f(x)=7+sqrt3x+21 and express it using interval notation.
HOPE YOU MEAN f(x)=7+sqrt(3x+21)............IF SO THE NUMBER UNDER SQ.RT. SHOULD BE NON NEGATIVE.
HENCE
3X+21>=0
3X>=-21
X>=-7
DOMAIN IS [-7,INFINITY)
-7<=X