Solve the System by Using the Inverse of the Coefficient $$\begin{array} { r } 3 x + 5 y = - 10 \\- 3 x - 6 y = 9\end{array}$$

question 188

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- $$\begin{array} { r } 3 x + 5 y = - 10 \\- 3 x - 6 y = 9\end{array}$$

• A) \(\{ ( - 5,1 ) \}\)
• B) \(\{ ( 5 , - 1 ) \}\)
• C) \(\{ ( - 1,5 ) \}\)
• D) \(\{ ( 1 , - 5 ) \}\)

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The interest rate that has been adjusted for inflation, indicating the real cost of borrowing or the real yield on an investment.

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