Answer:
Far left one, A
Step-by-step explanation:
Domains are the first sets of numbers they are also the x and the range is the second sets of number and is the y
13 because you do 18-8 and you get 10 and divide that by 2 and you get 5 then add 5 to 8 and you get 13 and subtract 5 from 18 and you get 13 as well. Hope that helps
