A firm produces two types of calculators each week, x of type A and y of type B. The weekly revenue and cost functions (in dollars) are as follows. R(x,y) = 140x + 170y + 0.04xy-0.09x2 -0.05y² Find Px (1400, 1700) and Py(1400, 1700), and interpret the results. Px(1400, 1700) = C(x,y) = 9x + 7y+20,000

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