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?