Solve the problem.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. 3.49%
B. 3.80%
C. 3.77%
D. 3.38%
Answer: D
Mathematics
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Perform the indicated operation.Subtract (12a5 - 14a3) from (-8a5 + 3a3).
A. 4a5 - 11a3 B. -20a5 - 11a3 C. -20a5 + 17a3 D. -3a8
Mathematics
Simplify.(2xy)3(3x4y9)2
A. 6x5y21 B. 72x9y14 C. 72x11y21 D. 6x11y21
Mathematics
Use the given conditions to write an equation for the line in slope-intercept form.Passing through (2, 5) and perpendicular to the line whose equation is y = 3x.
A. y = 
x - 
B. y = - 3x - 17
C. y = - 
x - 
D. y = - 
x + 
Mathematics
Add or subtract. Write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics