Given \( f(x, y)=70 x+80 y-5 x^{2}-2 y^{2}-x y \) Evaluate \( f(7,3) \) \[ f(7,3)= \]
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Step 1: Substitute \( x = 7 \) and \( y = 3 \) into the function \( f(x, y) = 70x + 80y - 5x^2 - 2y^2 - xy \). Show more…
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