Answer:
It's undefined
Step-by-step explanation:
That symbol is undefined
6z-7z/5=3
(30z-7z)/5=3
30z-7z=15
23z=15
z=15/23
Step-by-step explanation:

Answer:
c= 7
Step-by-step explanation:
Domain is the values of y.
Plug the x values in the equation to find the corresponding y values:
when x=0, y=3
when x=2, y=-1
when x=-6, y=15
so the answer is D