Encode and Decode Messages
Encode or Decode the Given Message $A = \left[ \begin{array} { r r } 1 & 4 \\ - 2 & 9 \end{array} \right]$

question 133

Multiple Choice

Encode and Decode Messages
Encode or decode the given message, as requested, numbering the letters of the alphabet 1 through 26 in their usual
order.
-Use the coding matrix $A = \left[ \begin{array} { r r } 1 & 4 \\ - 2 & 9 \end{array} \right]$ and its inverse $A ^ { - 1 } = \left[ \begin{array} { l l } 9 & 4 \\ 2 & 1 \end{array} \right]$ to decode the cryptogram $\left[ \begin{array} { c c } - 7 & - 8 \\ 16 & 21 \end{array} \right]$ .

• A) ABLE
• B) ACTS
• C) ARMS
• D) ALAS

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Definitions:

Expenditures

The total amount of money spent by individuals, businesses, or governments on goods and services.

GDP

Gross Domestic Product, a measure of the economic performance of a country, calculated as the total value of all goods and services produced within the country in a specific time period.

Unfunded Promises

Commitments or obligations, especially by a government, for which no money has been set aside to fulfill them.

Economic Theory

A set of principles and frameworks that aim to explain and predict the behaviors of individuals, firms, and governments in an economy.