Find the slope of the polar curve at the indicated point.r = 2 + 7 cos ?, ? = 
A. 
B. 
C. - 
D. - 
Answer: B
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The following table shows the number N, in thousands, of newspaper subscriptions t years after initial publication. Use exponential regression to model the number of subscriptions as a function of time. Round your answer to two decimal places. t 0.00 3.00 6.00 9.00 12.00 N 4.28 9.76 22.60 55.74 135.97?
A. ?
B. 
C. ?
D. ?
Given that the x- and y-coordinates of a moving particle are given by the indicated parametric equations, find the magnitude and direction of the velocity for the specific value of t.x = 
, y = 5t2 - 3, t = 2
A. 1.54, 270.1° B. 20.00, 270.1° C. 20.00, 90.1° D. 1.54, 90.1°
Write the fraction as an equivalent fraction with the given denominator.
= 
A. 
B. 
C. 
D. 
Provide an appropriate response.If z = y
, then 
=
A. 
+ 
.
B. 
.
C. 
+ 
.
D. (2x + 6)y
.
E. 
.