Consider the Los Angeles Restaurant Industry before the virus where market demand is D_Start ,market supply is S_Start , the price of restaurant meals is P₁, and there are 10,000 restaurants in Los Angeles.

For a typical LA restaurant they have the following monthly costs:

1. 20 employees who are paid $3200 a month each i.e. a monthly payroll of $64,000
2. Monthly rent of $20,000 on a yearly lease.
3. a $20,000 a month debt payment on a loan secured by the owner's personal assets, i.e. the loan payment has to be made even if the restaurant closes.

Within a one month time frame:

1. Payroll is a [ Select ONE ] ["Fixed Cost", "Variable Cost"] .
2. Rent is a [ Select ONE ] ["Fixed Cost", "Variable Cost"] .
3. Monthly debt payment is a [ Select ONE ] ["Fixed Cost", "Variable Cost"] .

Within a 5 year time frame.

1. Payroll is a [ Select ONE] ["Fixed Cost", "Variable Cost"] .
2. Rent is a [ Select ONE ] ["Fixed Cost", "Variable Cost"] .
3. Monthly debt payment is a [ Select ONE ] ["Fixed Cost", "Variable Cost"] .

The virus hits the USA and people are afraid to eat in restaurants because of fear of getting infected.

1. This is a Change in the World affecting [ Select ONE ] ["Average Variable Cost", "the demand curve", "Fixed Costs", "Marginal Costs"] and will cause [ Select ONE] ["unit cost curves to shift up", "unit cost curves to shift down", "demand to shift right", "demand to shift left"] .