Evaluate the integral.dx

A.  ln + C
B. -  ln + C
C. -  ln + C
D. -  ln + C


Answer: C

Mathematics

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Provide an appropriate response. A catalog company is considering the purchase of an 800 phone number. Without the 800 number, calls cost $0.22 per minute, and with the 800 number calls will cost $0.13 per minute plus a $55.00 flat rate. Write a symbolic statement that could determine the minutes of calls that would make the $0.22 per minute charge equal to a $0.13 per minute charge including the $55.00 flat rate.

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Mathematics