A linear programming computer package is needed.

number of call$-$center employees who start work on day i where $i=1=$ Monday, $i=2=$ Tuesday, etc$).$

Min

s$.$t$.$

Monday

Tuesday

Wednesday

Thursday

Saturday

Sunday

$x_1,x_2,x_3,x_4,x_5,x_6,x_{7}0$

Find the optimal solution.

$(x_1,x_2,x_3,x_4,x_5,x_6,x_7)=()$

Give the number of call$-$center employees that exceed the minimum required.

$(M,Tu,W,Th,F,Sa,Su)=()$

Please answer all parts.