40 I believe because the space of the auto mobile catching up to the train is 4 hours. 4 times 30 is 120 miles so u need to figure out a number that can reach 120 in three hours. 3 times 40 is 120
Answer:
M, N, O
Step-by-step explanation:
This line contains the letter "M"
27-48x^4= 3(9-16x^4)
Because 3 is the GCF
i think it would be +3 bc -3 is below 0.
