a stereo salesperson earns a salary of $1,900 per month, plus commission of 4% sales. The salesperson wants to maintain a monthly income of at least $2,200. How much must the saesperson sell each month?

The salesperson must sell 7500 items to maintain a salary of $2,200.

Step-by-step 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

1900 + 0.04x = 2200 - -> x = 7500

He must sell $7500 each month.