The amount of time t (in minutes) a shopper spends browsing in the magazine section of a supermarket is a continuous random variable with probability density function
?
?
?
How much time is a shopper chosen at random expected to spend in the magazine section?
?
A. 
minutes
B. 
minutes
C. 
minutes
D. 
minutes
E. 
minutes
Answer: D
Mathematics
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Solve the equation.45 - 3x = 
A. {128}
B. {3}
C. {-3}
D. 
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A.
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B.
C.
D.
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