Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 1 + i, z2 = 
- i
A. 2
(cos 15° + i sin 15°)
B. 2
(cos 345° + i sin 345°)
C. 
(cos 15° + i sin 15°)
D. 2
(cos 75° + i sin 75°)
Answer: A
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Convert the numeral to the requested form.Some enumeration systems in the past were repetitive. If you want to represent three of something, you repeat the symbol for 1 three times. If you want to represent 30 things, you write the symbol for 10 three times, and so on. In ancient Egypt, the symbol for 1 was 
and the symbol for 10 was 
. How would you write the numeral for 75 in the Egyptian system?
A. 
B. 
C. 
D. 
For the compound inequality, give the solution set in both interval and graph forms.2x + 5 ? 1 and 2x + 5 ? 9
A. (-?, -2] ? [2, ?)
B. [-2, 2]
C. [-2, ?)
D. (-2, 2]
Find the median for the set of numbers.9.9, 6.9, 1.7, 5.7
A. 6.9 B. 5.80 C. 5.7 D. 6.3
Solve the triangle.a = 14, b = 14, c = 12
A. A = 65.6°, B = 65.6°, C = 48.8° B. A = 64.6°, B = 50.8°, C = 64.6° C. A = 50.8°, B = 64.6°, C = 64.6° D. A = 64.6°, B = 64.6°, C = 50.8°