Use your calculator to solve the problem.The length (in feet) an industrial spring is stretched from its natural length with work, W
is given by L = 
, where k is a constant for the given spring. If a certain spring has a constant of 67.6 and has 287 foot-pounds of work applied, how far will it stretch?
A. 2.06 feet
B. 8.49 feet
C. 72.1 feet
D. 2.91 feet
Answer: D
Mathematics
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Perform the indicated operation.
A. -24 B. 24 C. -6 D. 6
Mathematics
Solve the problem.An express train and a local train both leave Gray's Lake at 3 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of the local. Find the speed of each train.
A. Express: 25 mph; local: 12.5 mph B. Express: 60 mph; local: 30 mph C. Express: 50 mph; local: 25 mph D. Cannot be determined without more information
Mathematics
Evaluate the expression. 
4
A. 
B. - 
C. 
D. - 
Mathematics
Solve the system.x - 5y = 9-3x + 15y = - 27
A. 
B. 
C. ?
D. 
Mathematics