Solve the problem.A radio transmission tower is 140 feet tall. How long should a guy wire be if it is to be attached 8 feet from the top and is to make an angle of 25° with the ground? Give your answer to the nearest tenth of a foot.
A. 331.3 feet
B. 312.3 feet
C. 154.5 feet
D. 145.6 feet
Answer: B
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Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
local maximim
B. 
saddle point; 
C. 
saddle point
D. 
local minimum; 
local minimum
Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The curve 
and the lines 
and 
A. 
B. 
C. 
D. 
Determine whether the activity can be used to illustrate the given property.Making a pot of coffee, brushing your teeth, and taking a shower.Does the associative property hold?
A. Yes B. No
Use the Fundamental Counting Principle to solve the problem.A musician plans to perform 5 selections for a concert. If he can choose from 9 different selections, how many ways can he arrange his program?
A. 15,120 B. 126 C. 59,049 D. 45