The number (in millions) of U.S. cellular telephone subscribers can be described by 
, where x is the number of years past 1990. For years beyond 2010, does this graph increase or decrease? (Look at this graph in a window that includes these years.)
?
A. increases
B. decreases
Answer: A
Mathematics
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Change the order of integration and evaluate the integral.
A. 11?2
B. 
?2
C. 
?2
D. 
?2
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Find the exact value of the trigonometric expression without the use of a calculator.cos 75°
A. 
B. -
(
- 1)
C. - 
D. -
(
+ 1)
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Determine whether or not the function is one-to-one.f(x) = ?64 - x2
A. No B. Yes
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Find the given trigonometric function of the indicated angle using triangle RAW. tan R, where x=26, y=35, z=46.
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