What is the domain and range ?

The domain refers to the set of possible input values. The domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values shown on the y-axis.

Domain=the set of all x-coordinates={1,2,3,4}.
Range= the set of all y-coordinates={2,3}

What is the inequality?

There is 240 red cars and there is 400 blue cars because 240/3=80 and 80*5=400