Max bought CDs online. He paid $157.20 for 15 CDs, including the $12 shipping and handling fee. If each of the 15 CDs was the sa
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Hi, this is the notation for inclusion of all real numbers.
We can also state numbers which are positive or negative with a sign on top of the R notation like so:
We can also state numbers which are positive or negative with a sign on top of the R notation like so: