The value of x is 16 and the value of y is 24. The maximum profit is 309,000 dollars.
C(x,y) = 2x²-2xy+y²-9x-10y+11
R(x,y) = 7x+6y
Profit function P(x,y) = R(x,y) - C(x,y)
= 7x+6y - (2x²-2xy+y²-9x-10y+11)
= -2x²-y²+16x+16y+2xy-11
P(x) = -4x+16+2y
P(y) = -2y+16+2x
P(x) = 0
P(y) = 0
-4x+16+2y = 0
-2y+16+2x = 0
-2x+32 = 0
x = 16
y = 24
P(16,24) = 304
Hence the maximum profit is 304,000.
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