Find the sum of the series.
A. - 
B. 
C. 
D. - 
Answer: D
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Provide an appropriate response.What does the graph of the equation 
look like?
A. A sphere B. A plane C. A cylinder D. A line
The position vector of a particle is r(t). Find the requested vector.The velocity at t = 
for r(t) = 4 sec2(t)i - 6tan(t)j + 1t2k
A. v
= 16i + 12j - 
?k
B. v
= -12j + 
?k
C. v
= -12j - 
?k
D. v
= 16i - 12j + 
?k
Write the series in summation notation. Use the index i and let i begin at 1 in each summation.-2 + 3 - 4 + 5 - 6 + 7
A. 
B. 
C. 
D. 
The following double-bar graph illustrates the revenue for a company for the four quarters of the year for two different years. Use the graph to answer the question. 
What was the difference in revenue between the fourth quarter of 2009 and the fourth quarter of 2010?
A. $5 million B. $3 million C. $15 million D. $1 million