Maxz$=3x_1+2x_2$

s$.$t

$2x_1+x_{2}100$

$x_1+x_{2}80$

$x_1,40$

$x_1,x_{2}0$

operation $1$

operation $2$

operation $3$

The following is an optimal tableau to a simplex algorithm for the above LP$.$ Use the model and the given tableau to answer the questions that follow

$\backslash$table$[[,x_1,x_2,s_1,s_2,s_3,$RHS$],[z,0,0,1,1,0,180],[x_1,1,0,1,-1,0,20],[x_2,0,1,-1,2,0,60],[s_3,0,0,-1,1,1,20]]$