Find all the first order partial derivatives for the following function.f(x, y, z) = x2y + y2z + xz2
A. 
= 2xy; 
= x2 + 2yz; 
= y2 + 2xz
B. 
= 2y + z2; 
= x2 + 2z; 
= y2 + 2x
C. 
= 2xy + z2; 
= x2 + yz; 
= y2 + xz
D. 
= 2xy + z2; 
= x2 + 2yz; 
= y2 + 2xz
Answer: D
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First, create a scatter plot for the data in the table. Then, use the shape of the scatter plot given to determine if the data are best modeled by a linear function, an exponential function, a logarithmic function, or a quadratic function.
A. 
linear function
B. 
logarithmic function
C. 
exponential function
D. 
quadratic function
Determine the limit by sketching an appropriate graph.
f(x), where f(x) = 
A. -10 B. 4 C. 27 D. 3
Use the formulas 
= 
, 
= 
, and 
= 
2 to find the sum.Find the sum of the first 275 positive integers.
A. 6,970,150 B. 3,485,075 C. 37,950 D. 75,900
Find the equations of the system shown on the graphing calculator screen.10
-10
A. x + y = 1 x - 3y = -9 B. y = 2x + 1 y = -0.3x - 5.9 C. y = 0.4x - 4.6 y = -0.3x - 5.9 D. y = 0.2x + 5.4 y = 3x + 11