Find the partial derivative.Find fy(-1, 2) when f(x, y) = .

A. - 
B.
C.
D. - 


Answer: A

Mathematics

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Use the graph to determine the domain and range of the function.

A. Domain: (-?, ?); range: (-?, -2) B. Domain: (-?, ?); range: (-?, -5] C. Domain: (-?, 0) ? (0, ?); range: (-?, -2) D. Domain: (-?, ?); range: (-?, -2]

Mathematics

Solve the problem.The following table shows the bumping rate per 10, 000 passengers for Airline X from 1994 through 1998. Use regression to find a quadratic function b(x) that can be used to predict the bumping rate x years after 1994. (Round decimals to four places.)

A. b(x) = 0.1235x2 - 0.6927x + 1.7109 B. b(x) = -0.1664x2 - 0.6927x + 1.2109 C. b(x) = 0.1664x2 - 0.6927x + 1.7109 D. b(x) = 0.1235x2 - 0.6535x + 1.2109

Mathematics

Solve the problem.The formula A = 210e0.031t models the population of a particular city, in thousands, t years after 1998. When will the population of the city reach 295 thousand?

A. 2010 B. 2012 C. 2009 D. 2011

Mathematics

Solve the problem.Where Jane lives, a sales tax of 2% is added to all purchases. If she buys a camera that costs $730, how much will she pay for the camera, including the tax? Round your answer to the nearest cent.

A. $744.60 B. $751.90 C. $737.30 D. $876.00

Mathematics