Solve the problem.A stone is thrown into a pond. A circular ripple is spreading over the pond in such a way that the radius is increasing at the rate of 2.4 feet per second. Find a function, r(t), for the radius in terms of t. Find a function, A(r), for the area of the ripple in terms of r. 
A. (A ? r)(t) = 5.76?2t
B. (A ? r)(t) = 5.76?t2
C. (A ? r)(t) = 4.8?t2
D. (A ? r)(t) = 2.4?t2
Answer: B
Mathematics
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Graph the rational function. Include the graphs and equations of the asymptotes.f(x) = 
A. asymptotes: x = -2, y = 0
B. asymptotes: x = -2, y = 0
C. asymptotes: x = 2, y = 0
D. asymptotes: x = 2, y = 0
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Find the coordinates of the y-intercept for the given equation.y = 
x
A. (0, 0)
B. 
C. 
D. 
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In order to prepare her budget, Sue gathers receipts for all major expenses she has had over the last month. Round the figure to the nearest dollar.Car payment, $465.48
A. $465 B. $465.48 C. $465.50 D. $466
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Solve the problem.If f(x) = 
and g(x) = 
, find (fg)(x).
A. 
B. 
C. 
D. 
Mathematics