Solve the problem.A conical tank is resting on its apex. The height of the tank is 
, and the radius of its top is 
. The tank is full of gasoline weighing 
How much work will it take to pump the gasoline to a level 
above the cone's top? Give your answer to the nearest ft ? lb.
A. 738,903 ft ? lb
B. 147,781 ft ? lb
C. 1,379,285 ft ? lb
D. 295,561 ft ? lb
Answer: A
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Solve the problem.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $10 each and a number of necklaces at $14 each. She wrote a check for $1440 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 65 bracelets and 55 necklaces B. 55 bracelets and 65 necklaces C. 70 bracelets and 50 necklaces D. 60 bracelets and 60 necklaces
L'Hopital's rule does not help with the given limit. Find the limit some other way.
A. 1 B. ? C. -1 D. 0
Evaluate the logarithm without the use of a calculator.log5 
A. 5 B. -5 C. 2 D. -2
Consider the spheres shown in the figure.The sphere at the left shows two lines. In Euclidean geometry, we know that two lines are either parallel or cross at exactly one point. Discuss this property in relation to what you observe in the figure.
What will be an ideal response?