A car salesman earns a base salary of $800 per month plus a commission of $200 for each car he sells. If the car salesman earned $2600 in September, how many cars does he need to sell in October in order to double his September earnings?	Choose the correct answer
A) 18 B) 19 C) 20 D) 21 E) 22
800+200x=5200   x=22 cars.   The answer is 22.
<result>E</result>
A car salesman earns a base salary of $800 per month plus a commission of $200 for each car he sells. If the car salesman earned $2600 in September, how many cars does he need to sell in October in order to double his September earnings?