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 the top? Give your answer to the nearest ft ? lb.
A. 96,981 ft ? lb
B. 2969 ft ? lb
C. 20,782 ft ? lb
D. 9,856,140 ft ? lb
Answer: C
Mathematics
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Solve the problem.The concentration of a certain drug in the bloodstream x hr after being administered is approximately 
Use the differential to approximate the change in concentration as x changes from 1 to 1.07.
A. 0.28 B. 0.49 C. 0.40 D. 0.03
Mathematics
Solve the problem.Write two out of five travel agents as a decimal and as a percent.
A. 4, 400% B. 0.4, 40% C. 0.4, 400% D. 0.4, 4%
Mathematics
Find the ordered pair for the y-intercept of the graph of the quadratic equation.y = x2 - 5
A. (0, -5) B. (5, 0) C. (0, 5) D. (-5, 0)
Mathematics
Perform the indicated operations.2(-2)
A. -6 B. -4 C. -40 D. -104
Mathematics