Question

14 f ( x ) = √ 7 + x range

Answer 1

`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`