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hi. i have a question. is the limit being taken from the left or right?

are you there?

well, this is a linear function or a first degree polynomial.

i'm not sure

so tell me what the problem is asking, if you would be so kind.

\[\lim_{x \rightarrow 4}(3x^2-9) \]

can you tell me in words, what it is asking?

-infity

right hand

ok. perfect. now, what do we know about 3x^2-9? what kind of a function is it?

what is the graph of that function?

i'm not sure...i'm a little confused on the whole topic of limits

oh ok

yea

if so, what did you get for a value?

39

that would be the correct answer. nicely done.

ok..thanks...its all starting to make sense now

good. do you have any other questions? I am not paid by the hour lol

lol. no not tonight

well, then, i hope you have a lovely evening. take care and good nite

thanks and the same to you

:))

what happens if the limit is being taken from the left?