Determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio.{5n2}
A. Geometric; r = 
B. Geometric; r = 5
C. Arithmetic; d = 5
D. Neither
Answer: D
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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. 412,240 ft ? lb B. 137,413 ft ? lb C. 11,130,474 ft ? lb D. 15,268 ft ? lb
Simplify the complex fraction.
A. 
B. 
C. 
D. 
Safety-Kleen operates the world's largest oil refinery at Elgin, Illinois. You have been hired by the company to determine how to allocate its intake of up to 70 million gallons of used oil to its three refinery processes: A, B, and C. You are told that electricity costs for process A amount to $150,000 per million gallons treated, while for processes B and C, the costs are respectively $100,000 and $50,000 per million gallons treated. Process A can recover 60 percent of the used oil, process B can recover 55 percent, and process C can recover only 50 percent. Assuming a revenue of $4 million per million gallons of recovered oil and an annual electrical budget of $4.9 million, how much used oil would you allocate to each process in order to maximize total revenues?
? Allocate __________ million gals to process A, __________ million gals to process B and __________ million gals to process C. What will be an ideal response?
Factor.5x2 - 34x + 24
A. (5x - 4)(x - 6) B. (5x - 18)(x - 6) C. (x - 4)(x - 6) D. (5x + 4)(x + 6)