Question

how to find domain or range

Answer 1

To find range, subtract the lowest observation from the largest observation i.e. Highest observation - Lowest observation.

To find domain, set the bottom equal to zero and exclude the x value you find when you solve the equation

Answer 2

Here is your answer

I am giving you an example with the help of this example you can easily understand how to find out Domain and Range for a function

Hope this helps you