Solve the problem.A cable company charges by the number of movie channels a subscriber chooses. The cost is given by 
where x is the number of movie channels. What is the cost for 2 movie channels.
A. $88.06
B. $27.50
C. $31.20
D. $19.30
Answer: D
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Add or subtract as indicated. Simplify the result whenever possible. Write any answer that contains an improper fraction as a mixed number.
- 
A. 
B. 
C. 
D. 
Online retail sales stood at $22.7 billion for 2000. For the next 2 years, they grew by 32.4% and 27.6% per year, respectively. For the next 6 years, online retail sales are projected to grow at 30.2%, 19.7%, 24.3%, 13.6%, 17.2%, and 10.6% per year, respectively. What are the projected online sales for 2008? Round your answer to one decimal place. ?
A. $113.6 billion B. $112.2 billion C. $110.8 billion D. $108.0 billion E. $109.4 billion
Provide an appropriate response.Indicate whether the following statement is true or false.If every element in one column of a 3 x 3 matrix is 0, but all other elements in the matrix are nonzero, the determinant of the matrix is 0.
A. False B. True
Solve the inequality, giving its solution set in both interval and graph forms.3 ? 
? 9
A. 
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B.
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C.
, 
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D.
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