A car salesperson earns a monthly base salary plus commission for every car he sells. The expression gives the amount the salesperson earns if he sells x cars in a month.

2,000 + 1,000x
Based on the expression, how much commission does he earn for each car sold?
A $0$0
B $1,000$1,000
C $2,000$2,000
D $3,000

The commission the salesperson earns for each car sold is equal to the coefficient of the x term in the expression. In this case, the coefficient of the x term is 1,000. Therefore, the salesperson earns $1,000 for each car sold.

Therefore, the correct answer is:

B) $1,000