Answer:
witch one
Step-by-step explanation:
I think its b because it makes sense
Use the substitution method
(9,90) y= 10x
90= 10(9)
90= 90
Answer is yes
Let x = speed and y = distance
y = x * 45
y = (x - 4) * 70
45x = 70x - 280
-25x = -280
x = 11.2
Put it back into the first equation:
y = 11.2 x 45
y = 504miles
Hope this helps! Any questions let me know :)
