Use the Two Phase method for this LP

Maximize

subject to:

At the end of Phase $1$ you will have found a bfs $.$ In this solution $($tableau$)$

$1.$ What is the $($decimal$)$ value of x$1$

$2.$ What is the $($decimal$)$ value of x$2$

$3.$ What is the value of s$1$

$4.$ What is the value of a$2+$a$3$

After fixing row$0$ at the beginning of Phase $2,$

$5.$ what is the value of z

After performing the first Phase II pivot

$6,$ what is the value of z

$7.$ Is this value of z optimal? y$/$n