Find the inverse of the matrix. 
Definitions:
Monthly Sales
The total revenue generated from the sale of goods or services within a month.
Margin of Safety
The extent to which sales levels can fall before reaching the break-even point, serving as a cushion against financial loss.
Target Profit
The desired net income a firm aims to achieve within a specific time period.
Dollar Sales
The complete income derived from the sale of products or services, measured in units of currency.
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