Im pretty sure this is the answer
12x-6y+2
Answer: no solution
Step-by-step explanation:
250 x 2=500 it can travel 500 mi in 4 hour at the same speed. 250/2=125
It can travel 125 mi in 1 hour. 4+1 = 5 hours
The train can travel 625 mi in 5 hours
I think you can figure the rest