Find the Maximum Value of the Function $f ( x , y ) = 10 x + 30 y - x ^ { 2 } - y ^ { 2 } - 160$

question 129

Multiple Choice

Find the maximum value of the function $f ( x , y ) = 10 x + 30 y - x ^ { 2 } - y ^ { 2 } - 160$

• A)90
• B)160
• C)50
• D)15
• E)80
• F)135
• G)16
• H)5

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