Use the data shown below to answer the following question(s).
Suppose that an unincorporated township wishes to find the best locations for emergency rooms.Assume that the township is divided into smaller layouts and that transportation studies have estimated the response time for emergency vehicles to travel between each pair of layouts.The township wants to locate the emergency rooms so that all layouts can be reached within a 9-minute response time.
The table below shows the estimated response time in minutes between each pair of layouts: 
Define Xj = 1 if an emergency room is located in layout j,and 0 if not.
-Determine the objective function.
Definitions:
Revaluation Method
An accounting technique used to adjust the carrying value of an asset to its current market value.
Disclosure of Balances
Involves the requirement in financial reporting to provide detailed information about the balances of different accounts on the balance sheet or within the financial statements.
Useful Life Estimates
Projections or assessments of the duration during which an asset is expected to be economically viable and productive for its intended purpose.
Revaluation Surplus
The increase in an asset's carrying amount as a result of a revaluation, recognized in equity.
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