A differentiable function f(x, y)f(x, y) has the property that f(2,5)=5f(2,5)=5 and fx(2,5)=−7fx(2,5)=−7 and fy(2,5)=7fy(2,5)=7. Find the equation of the tangent plane at the point on the surface z=f(x, y)z=f(x, y) where x=2x=2, y=5y=5.

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step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.