Use the pictograph to answer the question.This pictograph shows projected sales of compact disks (CDs) for a popular rock band for seven consecutive years. 
? = 10,000 CDsWhat is the total projected sales of CDs for all seven years?
A. 420,000
B. 440,000
C. 400,000
D. 100,000
Answer: A
Mathematics
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Suppose that a certain radioactive substance has a half-life of 45 years. If there are presently 1,920 milligrams of the substance, how much, to the nearest milligram, will remain after 180 years?
A. Q = 130 milligram B. Q = 120 milligram C. Q = 135 milligram D. Q = 95 milligram E. Q = 125 milligram
Mathematics
Express the given quantity in terms of sin x or cos x.sin (6? + x)
A. -sin x B. cos x + sin x C. cos x - sin x D. sin x
Mathematics
Solve the inequality. Give the solution set in both interval and graph forms.5x + 3 < -17 and 7 - 5x > -13
A. (-?, -4)
B. (-4, 4)
C. (-?, 4)
D. (-?, -4) ? (4, ?)
Mathematics
Differentiate.y = 
A. 
= x + 
B. 
= 1 - 
C. 
= 1 + 
D. 
= 1 + 
Mathematics