Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 1 + i, z2 = 
- i
A. 2
(cos 75° + i sin 75°)
B. 2
(cos 345° + i sin 345°)
C. 2
(cos 15° + i sin 15°)
D. 
(cos 15° + i sin 15°)
Answer: C
Mathematics
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Provide an appropriate response.Estimating the answer before calculating the exact answer is beneficial in some situations.
A. True B. False
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Graph the equation by plotting points.y = |x| + 3
A. 
B. 
C. 
D. 
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Solve. x - y + 4z = -54x + z = 0 x + 5y + z = 25
A. (0, 5, 0) B. (0, 5, -5) C. (0, -5, 5) D. (0, 0, 5)
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Multiply. Simplify if possible.4 ? 1
? 
A. 4
B. 3
C. 4
D. 2
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