The values of c that make the system 
, 
stable are
Select the correct answer.
?
A. 
B. 
C. It is stable for all values of c.
D. It is unstable for all values of c.
E. 
Answer: D
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Match the description with its graph.
A. A line with positive slope and a negative y-intercept. B. A line with positive slope and a positive y-intercept. C. A line with no x-intercept. D. A line with no y-intercept.
Solve the linear programming problem.A doctor has told a sick patient to take vitamin pills. The patient needs at least 6 units of vitamin A and at least 6 units of vitamin B. The red vitamin pills cost 
each and contain 1 unit of A and 2 units of B. The blue vitamin pills cost 
each and contain 2 units of A and 1 unit of B. To avoid indigestion, the patient should take no more than 4 red pills and no more than 7 blue pills. How many pills should the patient take each day to minimize costs?
A. 4 red and 7 blue B. 2 red and 2 blue C. 4 red and 1 blue D. 0 red and 6 blue
Solve the problem.The diagonal of the floor of a rectangular office cubicle is 2 ft longer than the length of the cubicle and 5 ft longer than twice the width. Find the dimensions of the cubicle. Round to the nearest tenth, if necessary.
A. width = 2 ft, length = 9 ft B. width = 3.9 ft, length = 9.7 ft C. width = 4 ft, length = 11 ft D. width = 9.7 ft, length = 22.4 ft
Determine the intervals of the domain over which the function is continuous.
A. (0, 1) B. (0, ?) C. (1, ?) D. (-?, ?)