Solve the problem.Water is falling on a surface, wetting a circular area that is expanding at a rate of 
How fast is the radius of the wetted area expanding when the radius is 
(Round your answer to four decimal places.)
A. 0.0685 mm/s
B. 0.0218 mm/s
C. 91.7344 mm/s
D. 0.0109 mm/s
Answer: D
Mathematics
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The scores on a 30-point multiple-choice exam are given in the following frequency table:
What is the median score on the exam?
A. 26 B. 25.5 C. 25 D. 26.5
Mathematics
Find the limit.
csch x
A. ? B. -? C. 1 D. 0
Mathematics
For the given pair of functions, find the requested function.f(x) = x2 + 4 and g(x) = 2x + 6; (g ? f)(7)
A. 59 B. 404 C. 100 D. 112
Mathematics
Solve the absolute value equation or indicate that the equation has no solution.
= 6
A. 
B. 
C. 
D. ?
Mathematics