Basically, there asking for the TOTAL PRICE. So, what you'll do is times the ROWS by SEATS . 12 x 18 = 216 Then times the amount for a ticket. 216 x 5 = 1080.
Well, you should probably check with somebody else but i had got 26.5 or 26 1/2. I'm not sure if that is correct due to it saying to use quadratic equations. Sorry