Jason is a used-car salesman who sells domestic and foreign cars. He earns $7,000 for each domestic car sold and loses $3,500 for each foreign car sold. Due to certain business commitments, Jason has to sell at least 10 foreign cars each month. He needs to make at least $17,000 each month to cover his expenses. Which graph shows the number of cars he has to sell each month to at least cover his expenses?
The equations would be 7000x +3500y = 17000 and x+y=10. I have made a graph of the two equations below. The point where the both meet is how many car he must sell in a month to cover his expenses.
