What does it mean when the domain of a graph is "all real numbers?"

vengeance

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What does it mean when the domain of a graph is "all real numbers?"
what does "all real numbers" mean?
and how can we use this to find the range of a exponential, cubic, parabolic,log, absolute values graph?
 
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stapel

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What does it mean when the domain of a graph is "all real numbers?"
what does "all real numbers" mean?
and how can we use this to find the range of a exponential, cubic, parabolic,log, absolute values graph?
What is your understanding of what "domain" means? What "real numbers" are? What "range" is?

Where are you getting stuck? Please be specific. Thank you! ;)
 
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