Solve the problem.What is the size of the matrix?
A. 4 × 4
B. 3 × 3
C. 3 × 4
D. 4 × 3
Answer: C
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Simplify the expression.
?
?
A. 
B. 
C. 
D. 
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%
Factor the perfect square trinomial completely.(x + 6y)2 + 10(x + 6y) + 25
A. (x + 6y - 5)2 B. (x + 6y - 5)(x - 6y + 5) C. (x + 6y + 5)2 D. (x - 6y + 5)2
Find the given value.Find 
when f(x) = x2 - 2 and g(x) = 2x + 1
A. - 
B. 
C. 0
D. Does not exist