Solve the problem.A swimming pool has a rectangular base 11 ft long and 22 ft wide. The sides are 6 ft high, and the pool is half full of water. How much work will it take to empty the pool by pumping the water out over the top of the pool? Assume that the water weighs 62.4 lb/ft3. Give your answer to the nearest ft ? lb.
A. 101,930 ft ? lb
B. 271,814 ft ? lb
C. 135,907 ft ? lb
D. 203,861 ft ? lb
Answer: D
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Determine the period and range for the function.f(x) = -cos(x) - 4
A. period: ?; range: [-6, -2] B. period: 2?; range: [-5, -3] C. period: 2?; range: [-1, 1] D. period: ?; range: [-5, -3]
If the distance to the sun is approximately 93 million miles, and, from the earth, the sun subtends an angle of approximately 0.5°, estimate the diameter of the sun to the nearest 10,000 miles. ?
A. 790,000 miles B. 810,000 miles C. 840,000 miles D. 850,000 miles E. 820,000 miles
Solve the problem.The polynomial -0.4t2+ 11t describes the average number of digits that participants in a memorization experiment were able to recall after t minutes. Find the number of digits recalled after 7 minutes. Round to the nearest digit.
A. 77 digits B. 57 digits C. 37 digits D. 97 digits
Solve the problem.A construction crane lifts a bucket of sand originally weighing 
at a constant rate. Sand is lost from the bucket at a constant rate of
. How much work is done in lifting the sand 
? (Neglect the weight of the bucket.)
A. 8000 ft ? lb B. 7375 ft ? lb C. 6750 ft ? lb D. 8625 ft ? lb