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 5 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: A
Mathematics
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Divide. Write the answer in lowest terms and as a whole or mixed number where possible.28 ÷ 
A. 21
B. 37
C. 
D. 7
Mathematics
Use a table and/or a graph to decide whether the limit exists. If it exists, find its value.
A. -1 B. Does not exist C. 5 D. 0
Mathematics
Find the equation of the circle satisfying the given conditions.Center: (0, 0), radius: 12
A. x2 - y2 = 12 B. x2 + y2 = 24 C. x2 + y2 = 144 D. x2 + y2 = 12
Mathematics
Identify the place value of the underlined digit.1.7
93
A. Hundreds place B. Tenths place C. Hundredths place D. Ten-thousandths place
Mathematics