Question

How do you simplify and list the restrictions for `h (x)= (7 - x) /( 3x - 21)`?

Answer 1

Refer to explanation

Explanation:

We have that

`3x-21=0=>x=7` hence the domain is `R-{3}`

we have that

`h(x)=(7-x)/(3(x-7))=-1/3`