Here the formula given

Where b = band payment , t = ticket sales, p = ticket price, s = security cost.
Here given number of tickets sold = 8000. So here t = 8000.
Price per ticket = $12. So p = $12.
Security cost is $4000. So s = $4000.
By plugging in the values in the formula we will get,





So the required band payment is $94000.