Find the requested partial derivative.z = 4x3 + 5xy - y; 
(4, 2)
A. 20
B. 211
C. 19
D. 212
Answer: C
Mathematics
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Find the domain of f.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the application.Find the area of the window. Use ? ? 3.14 and round to the nearest tenth if necessary.
3 dm
A. A ? 24.5 dm2 B. A ? 35.1 dm2 C. A ? 49.3 dm2 D. A ? 23.4 dm2
Mathematics
Provide an appropriate response.What is the name of the given shape? 
A. rectangle B. square C. circle D. parallelogram
Mathematics
Solve the problem.In how many ways can you answer the questions on an exam that consists of 7 multiple choice questions, each of which has 3 answer choices?
A. 3027 B. 2187 C. 1957 D. 343
Mathematics