Write the fraction.According to a recent study, 8 out of 12 visits to a hospital emergency room were for an injury. What fraction of emergency room visits are NOT injury-related?
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Plutonium has a decay rate of 0.003% per year. Suppose that a nuclear accident causes plutonium to be released into the atmosphere each year perpetually at the rate of 2 lb per year. What is the limiting value of the radioactive buildup? Round to the nearest pound.
A. 666,667 lb B. 6667 lb C. 667 lb D. 66,667 lb
Mathematics
Multiply.
(-9)
A. - 
B. - 
C. 
D. 
Mathematics
Find the inverse of the relation.{(6, -10), (6, -9), (4, -8), (2, -7)}
A. {(-9, -10), (-10, 4), (6, 6), (-8, -8)} B. {(-10, 6), (-9, 6), (-8, 4), (-7, 2)} C. {(6, -10), (-9, 6), (4, -8), (-7, 2)} D. {(-9, -10), (-7, 4), (6, 4), (-8, -8)}
Mathematics
Subtract.-10 - 10
A. -20 B. 20 C. 0 D. -10
Mathematics