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14 f ( x ) = √ 7 + x range

1 Answer

10 votes


f(x) = √(7 + x)

We know that anything underneath a square has to be positive. so accordingly


7 + x \geqslant 0


x \geqslant - 7


domain \: - 7 \leqslant x \leqslant \infty

The answer to any value of x that that you plug, between -7 & ∞ will be between 0 & infinity.


range \: \: 0 \leqslant f(x) \leqslant \infty

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