What is the excluded value of x for (x-4)^2/(x-9)^2

Areal estate agent earns $32,000 a year plus $1,000 for each apartment he sells. write an equation that shows the relationship between the number of apartments abe sells,n, and the total amount he earns in a year,e. what is the total amount abe would earn from selling 10 apartments in one year

Find the equation using the point (4,8)

What function has a range {yly< 5}? question on picture above^