torri had 20$ to buy a birthday present for her dad. She decided to buy a dvd for $18. The sales tax is 7%. Does she have enough
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The domain of a relation is the set of all the x-terms of the relation.
Let's look at an example.
In the image provided I have attached a relation and we want to list the domain.
So, I will list all the x-terms. Notice however that I listed 7 once even though it appears twice in the relation. When listing the domain, you don't repeat the x-terms.
