Problem

Minimize $c=x+2 y$ subject to
\[
\begin{array}{c}
x+4 y \geq 18 \\
7 x+y \geq 18 \\
x \geq 0, y \geq 0 \\
c=\square \\
(x, y)=(\square
\end{array}
\]

Answer

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Answer

Final Answer: \(c=\boxed{10}\), \((x, y)=(\boxed{2}, \boxed{4})\)

Steps

Step 1 :This is a linear programming problem. We are asked to minimize the objective function \(c=x+2y\) subject to the constraints \(x+4y \geq 18\), \(7x+y \geq 18\), and \(x \geq 0, y \geq 0\).

Step 2 :We can solve this problem using a method for linear programming.

Step 3 :The optimal value of the objective function is 10.0, and the values of x and y that achieve this minimum are 2.0 and 4.0, respectively.

Step 4 :Final Answer: \(c=\boxed{10}\), \((x, y)=(\boxed{2}, \boxed{4})\)

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