Income is the money (annual earnings) that you make at your job, while wealth is what you own. Wealth is your net worth that includes the value of all of your assets minus your financial liabilities.
Since with have both the distance and the velocity of both cars, we can calculate their velocities, which is distance/time.
Roger:
2 miles in 7.5 minutes -> 
2 miles in 0,125h -> 
Natalie
2 miles in 6.5 minutes -> 
2 miles in 0,1083h -> 
With their velocities in hand you can draw your own conclusions ;)
He argued that deviance<span> is a natural and necessary part of society but that it's actually impossible not to have </span>deviance <span>in a functional society. </span>