Simplify.
A. 2xy2
B. 2x2
C. 2xy
D. 2x
Answer: D
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Find all the first order partial derivatives for the following function.f(x,y,z) = xe(x2 + y2 + z2)
A. 
= 2x2e(x2 + y2 + z2); 
= xye(x2 + y2 + z2); 
= 2xze(x2 + y2 + z2)
B. 
= (1 + 2x2) e(x2 + y2 + z2); 
= 2xye(x2 + y2 + z2); 
= 2xze(x2 + y2 + z2)
C. 
= (1 + 2x2) e(x2 + y2 + z2); 
= xe(x2 + y2 + z2); 
= xe(x2 + y2 + z2)
D. 
= (1 + 2x2) e(x2 + y2 + z2); 
= xy2e(x2 + y2 + z2); 
= xz2e(x2 + y2 + z2)
Solve.26 is what percentage of 13?
A. 2%
B. 20%
C. 
%
D. 200%
Solve the problem.The following bar graph shows the ranking of the top items sold at a local sporting event and the percent of fans selecting each item. 
What portion of fans purchased nothing? Write the answer as a percent and as a decimal.
A. 85%, 0.85 B. 50%, 0.5 C. 35%, 0.35 D. 72%, 0.72
Match the function with the graph that best describes the situation.The height of an animal as a function of time.
A. 
B. 
C. 
D. 