Solve the problem.The gravitational attraction A between two masses varies inversely with the square of the distance between them. If the force of attraction is 9 lb when the masses are 2 ft apart, what is the attraction when the masses are 6 ft apart?
A. 2 lb
B. 4 lb
C. 3 lb
D. 1 lb
Answer: D
Mathematics
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Find the slope of the polar curve at the indicated point.r = 5 sin 4?, ? = 
A. -1
B. undefined
C. 1 + 
D. 
Mathematics
Sketch the graph and show all local extrema and inflection points.y = 
A. Min: (0,0)
No inflection point
B. Min: 
No inflection point
C. Min: (0,0)
Inflection points: 
, 
D. Min: 
No inflection point
Mathematics
Multiply.
? 
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.
= 7
A. {12} B. {24} C. {-24} D. {48}
Mathematics