Find the inverse of matrix A and check it by calculating 
. 
Definitions:
Flotation Cost
The total costs that a company faces when it issues new securities, including underwriting fees, legal fees, and registration fees.
Retained Earnings
Cumulative net earnings not distributed as dividends to shareholders, but instead reinvested in the business.
Inflation
The pace at which prices for goods and services across the board go up, diminishing the value of money.
Required Rate
The minimum return an investor expects to achieve on an investment, considering its risk level and the opportunity cost of forgoing other investments.
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