Write the System of Equations Associated with the Augmented Matrix $\left[ \begin{array} { r r | r } 20 & 3 & 18 \\ 11 & 15 & 6 \end{array} \right]$

Multiple Choice

Write the system of equations associated with the augmented matrix. Do not solve.
- $\left[ \begin{array} { r r | r } 20 & 3 & 18 \\ 11 & 15 & 6 \end{array} \right]$

A) $20 x + 3 y = 18$
$15 x + 11 y = 6$

B) $20 x + 3 y = - 18$
$11 x + 15 y = - 6$

C) $20 x + 3 y = 18$
$11 x + 15 y = 6$

D) $3 x + 20 y = 18$
$11 x + 15 y = 6$