Perform the indicated operations and write the result in standard form.(
)(
)
A. -42i
B. -42
C. 42
D. 42i2
Answer: B
Mathematics
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Factor when possible. If the polynomial is prime, say so.x2 + 7xy + 12y2
A. (x - 4y)(x + y) B. (x + 4y)(x + 3y) C. (x - 4y)(x + 3y) D. prime
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Change the number 
to base ten.
?
A. 519 B. 239 C. 2,856 D. 231 E. 400
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Express as a single logarithm.4logbx - logby
A. logb
B. logbx4 ÷ logby
C. logb
D. logb(x4 - y)
Mathematics
Solve the problem.At a manufacturing plant, the total cost (in dollars) to produce x items isC(x) = 4.88x + 31,000.What is the total cost to produce 3000 items?
A. $47,140 B. $14,640 C. $45,640 D. $31,004.88
Mathematics