A garage band wants to hold a concert. The expected crowd is 3,000. The average expenditure on concessions is $ 15. Tickets sell for $ 10 each, and the band’s profit is 80% of the gate and concession sales, minus a fixed cost of $ 12,000. Develop a general mathematical model and implement it on a spreadsheet to find their expected profit., construct a tornado chart and explain the sensitivity of each of the model’s parameters on total profit.