Determine the viewing window used. 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the curvature of the curve r(t).r(t) = (9t + 5)i - 10j + (5 - 
t2)k
A. ? = 9
B. ? = 
C. ? = 9
3/2
D. ? = 
Mathematics
Solve the problem. If the base of the log is not specified, assume that it is 10.The loudness of a sound can be approximated by the formula d = 10 log 
, where d is the number of decibels. The higher the value of d, the louder the sound. Find the number of decibels when 
and 
A. 14 decibels B. 10,000 decibels C. 40 decibels D. 4 decibels
Mathematics
The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = cos ?
A. x2 + y2 = y B. (x + y)2 = x C. x2 + y2 = x D. (x + y)2 = y
Mathematics
Find the exact value of the real number y.y = sin-1 (-0.5)
A. - 
B. 
C. - 
D. 
Mathematics