Find all specified roots.Cube roots of 1.
A. 1, - 
+ 
i, - 
- 
i
B. -1, 1
C. 1, 
+ 
i, - 
+ 
i
D. 1, 
- 
i, - 
- 
i
Answer: A
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Multiply the expressions.(w - 10)2
A. w2 + 100 B. w2 - 20w + 100 C. 100w2 - 20w + 100 D. w + 100
Translate the problem to a system of equations, then solve using Cramer's Rule.Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is 1200 liters per hour. What is the flow in each pipe?
A. 600 liters/hr hot, 400 liters/hr cold B. 400 liters/hr hot, 600 liters/hr cold C. 720 liters/hr hot, 480 liters/hr cold D. 480 liters/hr hot, 720 liters/hr cold
Solve the problem.Find C(x) if C'(x) = 
and C(9) = 40.
A. C(x) = 2x3/2 + 22
B. C(x) = 
x3/2 + 31
C. C(x) = 
x3/2 + 22
D. C(x) = 2x3/2 + 31
Find the unknown length in the right triangle. 
A. b = 16 ft B. b = 20 ft C. b = 19 ft D. b = 14 ft