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If f (x) =√ 7 − x, then which of the following sets is the domain of this function?

If f (x) =√ 7 − x, then which of the following sets is the domain of this function?
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4 votes
If f (x) =√
7 − x, then which of the following sets is the domain of this function?

User Johanwannheden
by
7.8k points

1 Answer

2 votes
square root must be greater than or equal to zero.

7 - x ≥ 0
- x ≥ -7
x ≤ 7

(-∞, 7]
User Samsdram
by
8.0k points
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