Use Linear Programming to Solve Problems
-Objective Function $$\begin{array} { l } z = 5 x + 7 y \\x \geq 0 \\0 \leq y \leq 5 \\2 x + 3 y \geq 12 \\2 x + 3 y \leq 20\end{array}$$

Multiple Choice

Use Linear Programming to Solve Problems
-Objective Function
$$\begin{array} { l } z = 5 x + 7 y \\x \geq 0 \\0 \leq y \leq 5 \\2 x + 3 y \geq 12 \\2 x + 3 y \leq 20\end{array}$$
$$\text { Constraints } \quad x \geq 0$$

A) Maximum: 50; at $( 10,0 )$
B) Maximum: 45 ; at $( 2,5 )$
C) Maximum: 30 ; at $( 6,0 )$
D) Maximum: $- 20$ ; at $( 4,0 )$