Give an appropriate answer.If f(x, y, z) = exyz find fz(x, y, z).
A. zexyz
B. xyez
C. xyexyz
D. xyzexyz
Answer: C
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Factor the trinomial.
?
?
A. 
B. 
C. 
D. 
E. 
Solve the problem.Find the center of mass of a tetrahedron of density 
bounded by the coordinate planes and the plane 
.
A. 
= 
, 
= 
, 
= 
B. 
= 
, 
= 
, 
= 
C. 
= 
, 
= 
, 
= 
D. 
= 
, 
= 
, 
= 
Insert <, >, or = to make the statement true.-88 
-80
A. = B. < C. >
Solve the problem.A drug company establishes that the most effective dose of a new drug relates to body weight as shown below. Let body weight be the independent variable and drug dosage be the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the most effective dosage for a person weighing 140 pounds? 
A. 13.07 mg B. 14.5 mg C. 14.64 mg D. 18.74 mg