Answer:
Average speed is 60 km/hour
Explanation:
When we need to calculate average speed, we use this equation:
Where: 
position at the beginning
at the end
Then: 
Finally V = 60 km/hour
The answer would be 46.482 because you multiply 18.3 by 2.54 because for every inch you get 2.54 centimeters
Answer:
I think it is meteorologist because they also study of the atmosphere, atmospheric phenomena, and atmospheric effects on our weather.
I would think that you would have to do 42/2=21Hz, but I'm not sure...
