Saturday
December 27, 2014

Homework Help: math

Posted by Caroline on Wednesday, September 9, 2009 at 4:11am.

functions
f(x)=rad. x-9

write the intervals of the functions. How do I put the set of numbers in the form of intervals such as infinity.

I solved it and got the answer as this:
x < or = 9
(infinity,9]
Please help me, I am stuck.

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