A small rural town has experienced growth at a rate of 50 people per year since 2000. If the population of the town in 2000 was 600, which of the following equations represents the town's population as a function of time? (Assume 2000 is represented by x = 0, 2001 is represented by x = 1, and so on).
A.
50x + y = 600
B.
50x – y = –600
C.
x + 50y = 600
D.
x – 50y = 600