Solve the problem.The area A = ?r2 of a circular oil spill changes with the radius. At what rate does the area change with respect to the radius when 
A. 20 ft2/ft
B. 20? ft2/ft
C. 100? ft2/ft
D. 10? ft2/ft
Answer: B
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Solve the problem.Derive a series for ln(1 + x2) for x > 1 by first finding the series for 
and then integrating. (Hint: 
)
A. 2 ln x + 
B. ln x + 
C. ln x + 
D. 2 ln x + 
Divide, if possible.
A. 12 B. 0 C. 1 D. Not defined
Solve. Reduce the fraction in your answer.There are 13,300 employees at a company. If 11,900 are females, what fraction of the employees are females?
A. 
B. 
C. 
D. 
Solve the problem.Mike, Joe, and Bill are painting a fence. The painting can be finished if Mike and Joe work together for 4 hours and Bill works alone for 2 hours or if Mike and Joe work together for 2 hours and Bill works alone for 5 hours, or if Mike works alone for 6 hours, Joe works alone for 2 hours, and Bill works alone for 1 hour. How much time does it take for each man working alone to complete the painting?
A. Mike 12 hr, Joe 10 hr, Bill 10 hr B. Mike 16 hr, Joe 8 hr, Bill 8 hr C. Mike 8 hr, Joe 8 hr, Bill 16 hr D. Mike 8 hr, Joe 16 hr, Bill 8 hr