Solve the problem.The gravitational force (in lb) of attraction between two objects is given by 
where x is the distance between the objects. If the objects are 15 ft apart, find the work required to separate them until they are 50 ft apart. Express the result in terms of k.
A. 
k
B. 
k
C. 
k
D. 
k
Answer: C
Mathematics
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Find the area of the region bounded by y = 2x, 
x = 0 , and x = ?2.
What will be an ideal response?
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Use the properties of radicals to simplify the following expression.
Mathematics
Graph.
- 
= 1
A. 
B. 
C. 
D. 
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Simplify the decimal expression.4.69 + (- 14.7)
A. -10.11 B. -19.39 C. -10.01 D. -20.39
Mathematics