Answer all parts please!

7) (22 pts) The following LP is being solved using the revised simplex method: Max:8x1+9x2+6x1st:x1+x32x1+4x2+2x34x2+2x3x1,x2,x351270 At one point, a partially completed tableau is: Answer all of the following questions by performing the appropriate matrix calculations. If you cannot determine some information that you need to solve the problem, assume a value or matrix to use in calculations. You will not receive full credit, but at least you will be able to continue. ( 9 pts) What are the current values of all variables including slack variables? ( 5 pts) What is the current objective function value? ( 8 pts) Is the current basis optimal