I’ll help comment the questions and I’ll answer
No.
Double 5 and add 1 is 5(2)+1 = 11
Add 1 to 5 then double it: (1+5)2 = 12
33 is composite
49 is composite
21 is composite
You can graph it but cant answer it because there is two variables so try and change it to slope intercept form do you know how ???????
