Determine if the sequence is geometric. If the sequence is geometric, find the common ratio.2, 
, 
, 
, . . .
A. yes, 4
B. no
C. yes, 
D. yes, 
Answer: B
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Solve the problem.About how much will 
change if the point 
moves from 
a distance of 
unit in the direction 
A. - 
B. - 
C. - 
D. - 
Find the vector projv u.v = 7i - 3j + k, u = -3j + 4k
A. 
i - 
j + 
k
B. - 
j + 
k
C. 
i - 
j + 
k
D. - 
j + 
k
Solve the problem.Trains S and T are both traveling in the same direction. Their distance in miles North of Chicago after x hours are computed by the functions fS and fT, respectively, and their graphs are shown in the figure for 
During what time interval is Train T closer to Chicago than Train S? 
A. always, or x ? 0 B. between 3.3 and 8 hours, or 3.3 < x ? 8 C. between 0 and 3.3 hours, or 0 ? x < 3.3 D. after 3.3 hours, or x > 3.3
The loudness of a sound of intensity x, measured in watts per square meter, is defined as L(x) = log (
), where xo = 10-3.At a rock concert by The Who, the music registered a loudness level of 120 decibels. The human threshold of pain due to sound averages 130 decibels. Compute the ratio of the intensities associated with these two loudness level to determine by how much the intensity of a sound that crosses the human threshold of pain exceeds that of this particular rock concert.
What will be an ideal response?