Choose the correct response.What is the speed of a plane that travels at a rate of 580 mph into a wind of r mph?
A. r - 580 mph
B. 580 - r mph
C. 580 + r mph
D. 
mph
Answer: B
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Solve the problem.Evaluate 
, where k is a positive integer.
A. 
B. 
C. 
D. 
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
Find the missing length to the nearest tenth.
A. b = 3.0 ft B. b = 16.2 ft C. b = 13.7 ft D. b = 94.5 ft
For the given rectangular equation, write an equivalent polar equation.x - 10y = 0
A. tan ? = 10
B. tan ? = 
C. r = 10 tan ?
D. r = 
tan ?