Perform the indicated operation. Write the result in the form a + bi.
A. 
+ 
i
B. 
- 
i
C. 
+ 
i
D. 
+ 
i
Answer: C
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Find the limit.
A. -6
B. 6
C. - 
D. 7
Evaluate the integral.
dz
A. - 
csc 
+ C
B. csc 
+ C
C. -csc 
+ C
D. -cot 
+ C
Solve the problem.The sum of the percentages 31.542%, 17.467%, 22.42%, 12.861%, and 15.71% is 100.000%. Adjust the list so that there are no fractional parts. The following table shows the numbers truncated and the discarded portions.
A. 32%, 18%, 22%, 13%, 16% B. 31%, 17%, 22%, 13%, 15% C. 32%, 17%, 22%, 13%, 16% D. 31%, 17%, 22%, 12%, 16%
Solve.A construction crew replaced 
mile of sewer line in the process of updating a section of a road. Another crew replaced 
mile of sewer line while working on the same project. How much longer was the sewer line that the second crew replaced?
A. 
mi
B. 
mi
C. 
mi
D. 
mi