Use this graph to answer the question.
MonthWhat was the total increase in sales from 2009 to 2010?
A. $12,000
B. $182,000
C. $1,342,000
D. $22,000
Answer: B
Mathematics
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Find the area of the specified region.Inside the circle r = a sin? and outside the cardioid r = a(1 - sin ?), a > 0
A. 
(6 - ?)
B. 
(3
- ?)
C. 
(2? - 3
)
D. 
(4? - 3
)
Mathematics
Classify the angle as acute, right, obtuse, or straight.
A. Straight B. Acute C. Obtuse D. Right
Mathematics
Determine whether the given equation is a rational function.f(x) = 
A. No B. Yes
Mathematics
Solve the system by the addition method.x2 + y2 - 4x + 8y + 19 = 0 x2 - y2 - 4x - 8y - 13 = 0
A. {(3, -4), (-1, -4)} B. {(3, -4), (1, -4)} C. {(2, 3), (2, 5)} D. {(2, -3), (2, -5)}
Mathematics