PLEASE HELP ASAP!!!!!

Consider the following network representation of a transportation problem.

$(1)$

The supplies, demands, and transportation costs per unit are shown on the network.

$($a$)$ Develop a linear programming model for this problem; be sure to define the variables in your model. Let

$x_{11}=$ amount shipped from Jefferson City to Des Moines

$x_{12}=$ amount shipped from Jefferson City to Kansas City

$x_{13}=$ amount shipped from Jefferson City to St$.$ Louis

$x_{21}=$ amount shipped from Omaha to Des Moines

$x_{22}=$ amount shipped from Omaha to Kansas City

$x_{23}=$ amount shipped from Omaha to St$.$ Louls

Min

s$.$t$.$

From Jefferson City

From Omaha

To Des Moines

To Kansas City

$x_{12}+x_{22}=20$

To St$.$ Louis

$x_{13}+x_{23}=25$

$x_{11},x_{12},x_{13},x_{21},x_{22},x_{23}0$

$($b$)$ Solve the linear program to determine the optimal solution.

$\backslash$table$[[,$Amount,Cost$],[$Jefferson City$-$Des Moines,,$],[$Jefferson City$-$Kansas City,,$],[$Jefferson City$-$St$.$ Louis,,$],[$Omaha$-$Des Moines,,$],[$Omaha$-$Kansas City,,$],[$Omaha$-$St$.$ Louis Total,,$]]$