Find the indicated derivative.Find fz for f(x, y, z) = 2x9e(6y7 + 2z4).

A. 16x9z3e(6y7 + 2z4)
B. 8z3e2z4 
C. 8z3e(6y7 + 2z4)
D. 16x9z3e8z3


Answer: A

Mathematics

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Round the number as indicated.One year, a certain country reported tax revenues of $16,194,416,459. Round this amount to the nearest hundred thousand dollars.

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