Damietta, it can shipped to Rotterdam, Toulon, and Palermo at costs of $\backslash (\backslash$$ $0\mathrm{.}25,\backslash$$ $0\mathrm{.}20\backslash ),$ and $\backslash (\backslash$$ $0\mathrm{.}15\backslash ),$ respectively.

Draw a network flow model for this problem.

Implement your model in a spreadsheet and solve it$.$

a$.$ What is the optimal solution? $4$ Damietta $5$ Rotterdam $4$ Damietta $6$ Toulon $4$ Damietta $7$ Palermo

b$.$ What is the minimum cost? $\backslash (\backslash$$ $\backslash )$

$\backslash (\backslash$$ $\backslash )$

give me the answers to fill the white boxes asap