Please explain these so that i can study it well.

I work in taco-bell and its a food industry. I am a manager there.Explain shifts in supply and demand curves, describe a change in the food industry.

The change in food industry may arise from a change in costs, entry/exit of firms, a change in consumer tastes, a change in the Macroeconomy, a change in interest rates, or a change in exchange rates.

Explain what happened to food industry price and quantity due to demand and supply curves. If more than one change occurred, then decompose the change into smaller pieces.

Describe how tacobell could profitably use the analysis.