21. carmen earns a base salary of $125,000,
a commission of 4% of her total sales,
and a performance bonus of $25,000. it
her total compensation last year was
more than $350,000, what was the least
her total sales could be?

This isn't History. But I'll help you!
$350,000 - $125,000 - $25,000 =
$200,000.

4% Commission is 1/25 of her sales. $200,000 x $5,000,000. However she earns more than $350,000, so she would have had to have sales OVER $5,000,000.