Which equation, in standard form, represents the relationship between the number of bus rides, x, and the amount of bus money Shawn will have left, y?

Answer:
B
Step-by-step explanation:
x + y = 50
1. 0 + 50 = 50
2. 9 + 41 = 50
3. 18 + 32 = 50
4. 27 + 23 = 50