Use DeMoivre's Theorem to write the expression in rectangular form.
10
A. 
- 
i
B. - 
- 
i
C. - 
+ 
i
D. 
+ 
i
Answer: B
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Rationalize the denominator.
A. 
- 
B. 
C. 
D. 
Solve the problem.A pendulum bob swings through an arc 50 inches long on its first swing. Each swing thereafter, it swings only 90% as far as on the previous swing. How far will it swing altogether before coming to a complete stop? Round to the nearest inch when necessary.
A. 111 inches B. 250 inches C. 56 inches D. 500 inches
Perform the indicated operations.92 + 8 ? 6 - (10 + 4 ? 6)
A. 500 B. 143 C. 95 D. 45
Three neighbors need to locate their mailboxes so that the mail carrier will only need to make one stop each day for all three of them. They decide to choose a spot for the mailboxes so that each neighbor is required to walk the same distance from his/her home to the mailbox. If points A, B, and C represent the three homes, where should they place the mailboxes? Justify your answer.
