Solve the system graphically. 
A. (1.5, -1)
B. (-1.5, -1)
C. (1, 1)
D. Inconsistent with independent equations
Answer: D
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Find 
. Write the answer in polar form with the argument between 0° and 360°z1 = 1 + i, z2 = 
+ i
A. 
(cos 15° + i sin 15°)
B. cos 75° + i sin 75°
C. (
- 2)(cos 15° + i sin 15°)
D. 
(cos 75° + i sin 75°)
Solve the problem.The cost of manufacturing a molded part is related to the quantity produced during a production run. When 100 parts are produced, the cost is $300. When 400 parts are produced, the cost is $2700. What is the marginal cost of the function?
A. $0.13 per part B. $9.00 per part C. $8.00 per part D. $6.00 per part
Solve the equation by completing the square.3x2 - 2x - 3 = 0
A. 
B. 
C. 
D. 
Use the given zero to write P(x) as a product of linear and irreducible quadratic factors.P(x) = x4 - 14x3 + 46x2 + 56x - 200, zero: 7 - i
A. (x + 2)(x - 2)(x2 + 14x - 50) B. (x + 2)(x - 2)(x2 - 14x + 50) C. (x + 2)(x - 2)(x2 + 50) D. (x + 2)(x - 2)(x2 - 50)