A project consists of seven independent tasks with processing times (in hours) given by 4, 5, 6, 7, 8, 9, and 12.Find the optimal finishing time Opt for N = 2 processors.
A. Opt = 27 hours
B. Opt = 24 hours
C. Opt = 25 hours
D. Opt = 23 hours
E. Opt = 26 hours
Answer: E
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves about the given lines.
,
y = 4,
x = 2; revolve about the line 
A. 
?
B. 
?
C. 
?
D. 
?
Perform the indicated operation.0.28 - 0.83
A. 0.2324 B. -1.01 C. -1.11 D. -0.55
Find all real numbers that satisfy the equation. Round approximate answers to 2 decimal places.
= 
A. 14
B. 28
C. 
D. 24.2
Solve the problem.The graph shows the average cost of a barrel of crude oil for the years 1981 to 1990 in constant 1996 dollars. Find the approximate average change in price from 1981 to 1986.1996 $/Barrel 
Year
A. About -$9/year B. About -$4/year C. About -$37/year D. About -$15/year