Solve the problem. Round to the nearest hundredth of a percent if needed.Use of the internet for shopping is increasing dramatically, but still is somewhat age dependent. When a popular web site that sells books asked the age of users who bought products from them over the internet, they obtained the following data. What is the probability that a buyer on this web site is aged 
A. 2.95%
B. 4.41%
C. 2.86%
D. 4.45%
Answer: C
Mathematics
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Use implicit differentiation to find dy/dx and d2y/dx2.x2 - y3 = 2
A. 
= 
; 
= 
B. 
= 
; 
= 
C. 
= 
; 
= 
D. 
= 
; 
= 
Mathematics
Find the limit.
x tan-1 
A. 
B. 5
C. -5
D. ?
Mathematics
Find the perimeter.The local park district acquired lands to be used for a new dog park. How many yards of fencing are needed to enclose the dog park?
A. 397 yd B. 307 yd C. 453 yd D. 377 yd
Mathematics
Write the equation in standard form for an ellipse or a hyperbola centered at (h, k).20x2 - 100x + 16y2 + 32y + 121 = 0
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics