The number of millions of short tons of carbon monoxide emissions y in the United States can be described by 
, where x is the number of years past 1970 (Source: Environmental Protection Agency). Use a graphing utility to plot this function and then use the graph to determine how many short tons of emissions occurred in 2005?
?
A. 193.60 million short tons
B. 698.57 million short tons
C. 69.76 million short tons
D. 412.97 million short tons
E. 110.57 million short tons
Answer: E
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P( X ? 9)
The probability density function of X is f (x) = 81 / x4 over [3, ?) . Compute the following quantity.
Find values for b such that the triangle has one solution. ? A = 74°, a = 17 ?
A. 
B. 
C. 
D. 
E. 