Find the missing complex number.(2 - 3i)(?) = 9 + 4i
A. - 
+ 7i
B. 
+ 
i
C. - 6 + 7i
D. 
+ 
i
Answer: D
Mathematics
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What will be an ideal response?
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Solve the problem.Photographic reprints cost $0.52 each at a local photo shop, or $0.44 each, plus $1.15 postage and handling, through the mail. How many reprints must a customer purchase to make it less expensive to use mail order?
A. more than 20 reprints B. more than 13 reprints C. more than 14 reprints D. more than 19 reprints
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Divide.- 
A. -10 B. -8 C. -9 D. 9
Mathematics