Using the profit concept to find the ticket sale, then the money made in ticket sales for the show is $7000.
<h3>What is profit?</h3>
The money that you gain by selling something.
Given
A band that will be the opening act for a concert charges a $500 flat fee as well as 10% of all profits from ticket sales.
They earned the profit will be
1200 - 500 = 700
They earned a profit is $700.
$700 is 10% of ticket sales. Then the money made in total ticket sales for the show will be

The money made in total ticket sales for the show is $7000.
More about the profit link is given below.
brainly.com/question/1494270