Select the region determined by the constraints. Then find the minimum value of the objective function (if possible) and where it occurs, subject to the indicated constraints.
?
Objective function:
?
z = 7x + 6y
?
Constraints:
?
x ? 0
?y ? 0
5x + 2y ? 20
5x + y ? 10
?
A. 
?Minimum at (2, 0): 14
B.
Minimum at (0, 2): 15
C.
Minimum at (0, 10): 60
D.
Minimum at (0, 4): 29
E.
Minimum at (4, 0): 14
Answer: A
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