Marcus earns a commission of of the price of every electrical appliance he sells. He also spends $10 on lunch each day. If he sells goods worth x dollars in a day, which expression represents the amount of commission he has left after buying lunch? If he sells goods worth $3,500 in one day, how much of his commission does he have left after buying lunch? A. The expression is , and the remaining commission is $351.
B. The expression is , and the remaining commission is $349.
C. The expression is , and the remaining commission is $340.
D. The expression is , and the remaining commission is $360.