The bar graph below shows the temperatures recorded as the high temperature in Little City on Brianna's birthday for the indicated years. 
In which year was the temperature closest to 0° C?
A. 2003
B. 1998
C. 2001
D. 2002
Answer: D
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Determine whether the series is absolutely convergent, conditionally convergent, or divergent.
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Find the center and radius of the circle whose graph is shown. Write the standard form of the equation of the circle.
A. r = 3; (h, k) = (4, -1); (x + 4)2 + (y - 1)2 = 9
B. r = 3; (h, k) = (4, -1); (x - 4)2 + (y + 1)2 = 9
C. r = 
; (h, k) = (4, -1); (x - 4)2 + (y + 1)2 = 3
D. r = 
; (h, k) = (4, -1); (x + 4)2 + (y - 1)2 = 3
Find the critical point(s) of the function. Then use the second derivative test to classify the nature of each point, if possible. Finally, determine the relative extrema of the function.
?
?
A. 
; saddle point: 
B. 
; relative maximum value: 
C. 
; relative minimum value: 
Use trigonometric identities to solve each equation in the interval [0, 2?]sec2 x - 2 = tan2 x
A. 
B. 
C. 
D. ?