Answer: The number of ceral boxes per day.
Because the slope will be [rise of the grah of the model function] / [run of the graph of the model function].
rise = [increase in the number of cereal boxes sold]
run = [days elapsed ]
rise / run = number of cereal boxes sold per day
100*2.2=220
80*2=176
220+176=396
So the two trains will take 2.2 hours so that they are 396 miles apart.
Isn’t it choice B …….…………
The average speed = (speed 1 + speed 2)/2
the average speed = (80/10 + 100/20)/2
the average speed = (8 + 5)/2
the average speed = 13/2
the average speed = 6.5 km/minute
