The equation y – 100x = 2000 can be used to represent the monthly salary of a salesman, y, when he sells x computer systems. What is the salesman's monthly salary if he sells no computers?

A. $20
B. $100
C. $2000
D. $2100

I'm pretty sure it'd be $2000, but I'm not sure

of course it is 2000

since x = 0
y - 0 = 2000