Decide whether or not the arrow diagram defines a function.DomainRange 
A. Yes
B. No
Answer: A
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Evaluate the integral which is given in cylindrical or spherical coordinates.
A. 5760 B. 95040 C. 51840 D. 8640
Reduce the fraction to simplest form.
A. 2k2 B. 3 C. 2k D. 3k2
Solve the problem. Round your answer, if appropriate.One airplane is approaching an airport from the north at 157 km/hr. A second airplane approaches from the east at 299 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 27 km away from the airport and the westbound plane is 23 km from the airport.
A. -313 km/hr B. -626 km/hr C. -469 km/hr D. -156 km/hr
Solve the initial value problem.Differential Equation: 
= -6ti + 7tj + 10tkInitial Condition: r(0) = -4i + 5k
A. r(t) = (-6t2 - 8)i + 7t2j + (10t2 + 10)k
B. r(t) = 
i + 
t2j + 
k
C. r(t) = 
i + 
t2j - 
k
D. r(t) = 
i + 
t2j + 
k