Find the derivative of the function by using the definition.y = 
A. - 
B. - 
C. - 
D. 
Answer: B
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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. 
(4? - 3
)
C. 
(3
- ?)
D. 
(2? - 3
)
Solve the problem.If s is proportional to t2, and s = 405 when t = 9, find s when t is 8.
A. 45 B. 72 C. 360 D. 320
Determine whether the scatter diagram indicates that a linear relation may exist between the two variables. If a linear relation does exist, indicate whether the slope is positive or negative.Draw a scatter diagram of the given data. Find the equation of the line containing the points 
and 
Graph the line on the scatter diagram.
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A. 
y = 2.17x + 12.88
B. 
y = -2.39x + 13.38
C. 
y = -2.17x + 12.88
D. 
y = -1.62x + 10.41
Solve the problem.If f(?) = cos ? and f(a) = 
, find the exact value of f(a) + f(a + 2?) + f(a + 4?).
A. 
+ 6?
B. 
C. 
D. 