20 people because 500÷25=20 and 72x20 is 1440 and 1440-500=940$
We would have to know the exact y coordinates at -3 and -1, then you would find the slope between these two points and that would be the average slope between -3 and 1
60 miles per hour and 55 miles per hour it will be 240 miles over 4 hours because if you divide 240 by 4 it is 60 miles faster than the other which is 55 miles per hour.
