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. 9000 ft ? lb
B. 7200 ft ? lb
C. 8100 ft ? lb
D. 9900 ft ? lb
Answer: C
Mathematics
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Solve the problem.The symmetry type of the border pattern . . . p b q d p b q d p b q d . . . is
A. 1g. B. 1m. C. mg. D. 12. E. none of these
Mathematics
Round the number to the specified place.428 to the nearest hundred
A. 400 B. 300 C. 500 D. 410
Mathematics
If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact.f(x) = 10 + 12x4 - 5x + 13x3 + 11x2
A. Degree: 4; leading coefficient: 12 B. Degree: 4; leading coefficient: 10 C. Not a polynomial function. D. Degree: 10; leading coefficient: 12
Mathematics
Find the logarithm.log9 
A. 3 B. 81 C. -3 D. -81
Mathematics