Rationalize the denominator and simplify.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Evaluate the improper integral.
A. 160 B. 96 C. 192 D. 128
Mathematics
Assume that the sequence converges and find its limit.a1 = 6, an + 1 = 
A. 7 B. 6 C. 5 D. 8
Mathematics
Solve the absolute value equation or indicate that the equation has no solution.
= 2
A. {2 - 
, 2 + 
}
B. {2 + 
}
C. {2 - 
}
D. ?
Mathematics
Solve the problem.The life expectancy of a car battery is normally distributed. The average (mean) lifetime is 235 weeks with a standard deviation of 15 weeks. If the company guarantees the battery for 4 years, what percentage of the batteries sold would be expected to be returned before the end of the warranty period?
A. 0.0359 B. 0.9281 C. 0.9641 D. 0.0719
Mathematics