Chapter 6.3, Problem 10E

In Problems 9 and 10,

(A) Form the dual problem.

(B) Write the initial system for the dual problem.

(C) Write the initial simplex tableau for the dual problem and label the columns of the tableau.

$\begin{array}{l}\text{Minimize }C=12x_1+5x_2\\ \text{subject to }2x_1+x_2\ge 7\\ \text{ 3}{x}_1+x_2\ge 9\\ x_1,x_2\ge 0\end{array}$