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

question 113

Multiple Choice

Encode and Decode Messages
-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 $\left[ \begin{array} { r r } - 7 & - 8 \\ 16 & 21 \end{array} \right]$ .

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

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Definitions:

Days in Inventory

A financial metric indicating the average number of days a company holds inventory before selling it.

Cost of Goods Sold

Direct expenditures associated with the process of producing goods for sale by a company, which include materials and labor.

Average Inventory

The mean value of inventory over a certain period of time, calculated to assess inventory levels and turnover.

Accounts Receivable Turnover

A financial ratio that measures how efficiently a company collects revenue from its customers by comparing net credit sales to average accounts receivable.