Answer:
The salesperson must sell 7500 items to maintain a salary of $2,200.
Explanation:
We know that the stereo salesperson earns $1,900 per month and a commission of 4% sales.
So to find out how much must the salesperson much sell each month to maintain a monthly income of $2,200, we will use the following formula:
Income = salary + (0.04) × sales
2200 = 1900 + (0.04) × sales
300 = (0.04) sales
sales = 300/0.04
sales = 7500