Answer: 
Step-by-step explanation:
Given
Max is driving at a speed of 
It took him three-quarters of a second i.e. 
Speed in meter per second is 
Distance is given by

Reaction distance is

Answer:
two
Step-by-step explanation:
I think this is a least common multiple question
So they would all arrive on day 504, (which probably is a few years)
8 = 2 × 2 × 2
18 = 2 × 3 × 3
21 = 3 × 7
I might be right I might be wrong, IM not positively sure but yknow