Simplify the expression. If any variables are present, assume that they are positive.
? 
A. 100
B. 20
C. 200
D. 10
Answer: D
Mathematics
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Find the volume of the solid generated by revolving the shaded region about the given axis.About the y-axis
A. 20? B. 10?2 + 5? C. 10?2 - 20? D. 5?2 - 10?
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Provide an appropriate response.A(n) __________ represents 
of a complete rotation.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the product.7(3x)
A. 10x B. 21x C. 10 D. 21
Mathematics
Solve. Express your answer as a signed number.The population of a certain city decreased by 24,883 in 10 years. Find the average annual change in population.
A. -248.83 per year B. 248.83 per year C. -2488.3 per year D. 2488.3 per year
Mathematics