Evaluate the expression without the use of a calculator, and then verify your answer using a calculator.ln e7
A. 7
B. e
C. 1
D. 
Answer: A
Mathematics
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Solve the problem.The speed of a stream is 4 mph. If a boat travels 88 miles downstream in the same time that it takes to travel 44 miles upstream, what is the speed of the boat in still water?
A. 14 mph B. 8 mph C. 12 mph D. 15 mph
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Find the period of the function.y = sin 5x
A. 2?
B. 
C. 1
D. 5
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Find the volume.Find the volume of the solid generated by revolving the area under y = 10e-x in the first quadrant about the x-axis
A. 100? B. 50? C. 200? D. 10?
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Evaluate the improper integral.
A. 
B. 
C. 
D. 
Mathematics