Select the best estimate for the measure of the given quantity.the length of a bookshelf
A. 66.5 km
B. 66.5 cm
C. 66.5 m
D. 66.5 mm
Answer: B
Mathematics
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A. 
B. 1
C. 14
D. 
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Find the area of the shaded region.
A. 5
B. 
C. 3
D. 
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Perform the indicated operation
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Answer the question or give an explanation.Describe the effect on merchants and customers if credit card usage suddenly stopped.
What will be an ideal response?
Mathematics