Well, if it is only 2 customers, I think the answers would be all the choices that are two. Like CD, CC, DC, and DD. I really hope this help you :)
Answer:
x^2(squared) +2x+1
Step-by-step explanation:
Answer:
C) (x-3)(x+3)
Note:
Just a tip there is an app called Desmos where you can put in equations like this and it will graph them for you.
The point (a,b) would be in quadrant 2 (the one on the top left)