Question

Which of the following is true about the function below? 1/√x+4

Answer 1

What are the options?

Answer 2

its domains is \[(-\infty,0]\] and its range is \[(0,\infty)\]
its domains is \[(-4,\infty)\] and its range is \[(0,\infty)\]
its domains is \[(-4,\infty)\] and its range is \[(\infty,-\infty)\]
its domains is \[[-4,\infty)\] and its range is \[(-\infty,0) \cup (0,\infty)\]

Answer 3

so like a first step hope you know when a fraction will be undefined ,yes ?

when the denominator is zero

so in this case when for what value of x will result the denominator equal zero ???