Final answer:
Alexander made $923 in commission last week. If he maintained the same earnings each week, he would have made $47,996 in commission in the year 2011.
Step-by-step explanation:
Alexander is a stockbroker who earns a 13% commission on the stocks he sells. To calculate Alexander's earnings from a $7,100 worth of stock sold, we use the formula:
Commission = Total Sales × Commission Rate
For Alexander, this is:
Commission = $7,100 × 0.13
Now we multiply $7,100 by 0.13 to find his commission for last week:
Commission = $7,100 × 0.13 = $923
Therefore, Alexander made $923 in commission last week. Assuming he makes the same amount each week, we need to multiply this by the number of weeks in the year to find his annual commission for 2011:
Annual Commission = Weekly Commission × Number of Weeks in a Year
Annual Commission = $923 × 52 = $47,996
Thus, if Alexander consistently earned the same commission every week, he would have made $47,996 in commission in the year 2011.