Express the following in terms of u and v, where u = ln x and v = ln y. For example, 
ln (x7
)
A. 7 u + v
B. 7 v + 
C. 7 u + 
D. 7 ln u + 
Answer: C
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Solve the variation problem.The weight of a liquid varies directly as its volume V. If the weight of the liquid in a cubical container 
on a side is 192 grams, find the weight of the liquid in a cubical container 5 cm on a side.
A. 105 grams B. 15 grams C. 125 grams D. 375 grams
Express the product as a sum containing only sines or cosines.sin 
cos 
A. 
[sin (3?) - sin (2?)]
B. 
[cos (3?) + sin (2?)]
C. 
sin cos (5?)
D. 
[cos (6?) - sin (4?)]
Perform the indicated division or state that the expression is undefined.42 ÷ 7
A. -5 B. 6 C. -6 D. 7
Solve the problem.Under certain conditions the wind speed S, in miles per hour, of a tornado at a distance d from its center can be approximated by the function 
where a is an atmospheric constant, and V is the approximate volume of the tornado, in cubic feet. Assume that a is 0.78, and find Sd.
A. 
B. 
C. 
D. - 