Solve the problem.Suppose the sales of a particular brand of MP3 player satisfy the relationship 
, where S represents the number of sales in year x, with 
corresponding to 2002 . Find the number of sales in 2005.
A. 4200
B. 6400
C. 12,600
D. 4400
Answer: D
Mathematics
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Given matrices A and B, find the indicated matrix if possible.A = 
, B = 
Find AB.
A. 
B. 
C. AB is not defined.
D. 
Mathematics
Estimate the product by first rounding each number so that there is one nonzero digit.1.51 × 415.4
A. 400 B. 1000 C. 800 D. 880
Mathematics
Solve the system of equations.x -y + 4z = 34x+ z = 2x + 4y +z = 22
A. {(0, 5, 2)} B. {(2, 0, 5)} C. {(5, 0, 2)} D. {(2, 5, 0)}
Mathematics
Perform the indicated operation.(x + 3)(x2 - x + 8)
A. x3 + 2x2 + 24 B. x3 + 4x2 + 11x + 24 C. x3 + 2x2 + 5x + 24 D. x3 + 24
Mathematics