Find the product.
?
?
A. 
?
B. 
?
C. 
?
D. 
?
E. cannot multiply?
Answer: A
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Let 
. If 
when 
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?
A. 
B. 
C. 
D. 
Solve the problem.A tumor is approximately spherical in shape. If the radius of the tumor changes from 
to 
, find the approximate change in volume.
A. 101 mm3 B. 268 mm3 C. 1700 mm3 D. 402 mm3
Solve.The air pollution, y, in appropriate units, in a large industrial city has been growing as shown by the graph below, where x is time in years from 1990. That is, x = 0 represents 1990. Approximate the air pollution in the year 2005 (x = 15) to the nearest thousand.
A. 20,000 B. 18,000 C. 15,000 D. 22,000
Simplify the algebraic expression.(8z + 10) - (3z - 8)
A. 5z - 18 B. 5z + 18 C. 5z + 2 D. 11z + 18